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Prof. Dr.  Olaf Lechtenfeld

https://orcid.org/0000-0003-1947-484X
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Publications

  1. 2024

  2. Published

    Nicolai maps for super Yang–Mills on the light cone

    Lechtenfeld, O., Sept 2024, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 856, 7 p., 138950.

    Research output: Contribution to journal › Article › Research › peer review

  3. Published

    Exact gauge fields from anti-de Sitter space

    Hirpara, S., Kumar, K., Lechtenfeld, O. & Picanço Costa, G., Jul 2024, In: Journal of mathematical physics. 65, 7, 14 p., 072903.

    Research output: Contribution to journal › Article › Research › peer review

  4. Published

    A hyperbolic Kac-Moody Calogero model

    Lechtenfeld, O. & Zagier, D., 14 Jun 2024, In: Journal of high energy physics. 2024, 6, 31 p., 93.

    Research output: Contribution to journal › Article › Research › peer review

  5. Published

    A Casimir operator for a Calogero W algebra

    Correa, F., Leal, G., Lechtenfeld, O. & Marquette, I., 12 Feb 2024, In: Journal of Physics A: Mathematical and Theoretical. 57, 8, 085203.

    Research output: Contribution to journal › Article › Research › peer review

  6. 2023

  7. Published

    Nicolai maps with four-fermion interactions

    Casarin, L., Lechtenfeld, O. & Rupprecht, M., 19 Dec 2023, In: Journal of high energy physics. 2023, 12, 17 p., 132.

    Research output: Contribution to journal › Article › Research › peer review

  8. Published

    An improved Nicolai map for super Yang–Mills theory

    Lechtenfeld, O. & Rupprecht, M., 10 Mar 2023, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 838, 137681.

    Research output: Contribution to journal › Article › Research › peer review

  9. Published

    Quasi-hermitian quantum mechanics and a new class of user-friendly matrix hamiltonians

    Lechtenfeld, O. & Znojil, M., 2023, In: Journal of Physics: Conference Series. 2667, 8 p., 012036.

    Research output: Contribution to journal › Conference article › Research › peer review

  10. Published

    The Nicolai-map approach to supersymmetry

    Lechtenfeld, O., 2023, In: Journal of Physics: Conference Series. 2667, 11 p., 012001.

    Research output: Contribution to journal › Conference article › Research › peer review

  11. 2022

  12. Published

    Supersymmetric large-order perturbation with the Nicolai map

    Lechtenfeld, O., 10 Dec 2022, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 835, 137507.

    Research output: Contribution to journal › Article › Research › peer review

  13. Published

    Yang–Mills solutions on Minkowski space via non-compact coset spaces

    Kumar, K., Lechtenfeld, O., Picanço Costa, G. & Röhrig, J., 10 Dec 2022, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 835, 10 p., 137564.

    Research output: Contribution to journal › Article › Research › peer review

  14. Published

    The Nicolai map for super Yang-Mills theory and application to the supermembrane

    Lechtenfeld, O., 23 Nov 2022, In: Proceedings of Science. 406, 12 p., 291.

    Research output: Contribution to journal › Conference article › Research › peer review

  15. Published

    Is the Nicolai map unique?

    Lechtenfeld, O. & Rupprecht, M., 19 Sept 2022, In: Journal of high energy physics. 2022, 9, 139.

    Research output: Contribution to journal › Article › Research › peer review

  16. Published

    Integrability of supersymmetric Calogero–Moser models

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 10 Aug 2022, In: Physics Letters B. 831, 137184.

    Research output: Contribution to journal › Article › Research › peer review

  17. Published

    Trajectories of charged particles in knotted electromagnetic fields

    Kumar, K., Lechtenfeld, O. & Costa, G. P., 5 Aug 2022, In: Journal of Physics A: Mathematical and Theoretical. 55, 31, 315401.

    Research output: Contribution to journal › Article › Research › peer review

  18. Published

    A perturbative expansion scheme for supermembrane and matrix theory

    Lechtenfeld, O. & Nicolai, H., 15 Feb 2022, In: Journal of high energy physics. 2022, 2, 114.

    Research output: Contribution to journal › Article › Research › peer review

  19. 2021

  20. Published

    Instability of cosmic Yang-Mills fields

    Kumar, K., Lechtenfeld, O. & Picanço Costa, G., Dec 2021, In: Nuclear Physics B. 973, 115583.

    Research output: Contribution to journal › Article › Research › peer review

  21. Published

    Algebraic integrability of PT -deformed Calogero models

    Correa, F. & Lechtenfeld, O., 25 Oct 2021, In: Journal of Physics: Conference Series. 2038, 1, 012007.

    Research output: Contribution to journal › Conference article › Research › peer review

  22. Published

    A low-energy limit of Yang-Mills theory on de Sitter space

    Cork, J., Kutluk, E. Ş., Lechtenfeld, O. & Popov, A. D., 16 Sept 2021, In: Journal of High Energy Physics. 2021, 9, 89.

    Research output: Contribution to journal › Article › Research › peer review

  23. Published

    Construction method for the Nicolai map in supersymmetric Yang–Mills theories

    Lechtenfeld, O. & Rupprecht, M., 10 Aug 2021, In: Physics Letters B. 819, 136413.

    Research output: Contribution to journal › Article › Research › peer review

  24. Published

    Universal form of the Nicolai map

    Lechtenfeld, O. & Rupprecht, M., 7 Jul 2021, In: Physical Review D. 104, 2, L021701.

    Research output: Contribution to journal › Letter › Research › peer review

  25. Published

    Integrability, intertwiners and non-linear algebras in Calogero models

    Carrillo-Morales, F., Correa, F. & Lechtenfeld, O., 19 May 2021, In: Journal of high energy physics. 2021, 5, 163.

    Research output: Contribution to journal › Article › Research › peer review

  26. Published

    Electromagnetic knots from de Sitter space

    Lechtenfeld, O., 23 Apr 2021, Proceedings of RDP online workshop "Recent Advances in Mathematical Physics": PoS(Regio2020). (Proceedings of Science; vol. 394).

    Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research

  27. Published

    New approach to N = 2 supersymmetric Ruijsenaars-Schneider model

    Kozyrev, N., Krivonos, S. & Lechtenfeld, O., 23 Apr 2021, Proceedings of RDP online workshop "Recent Advances in Mathematical Physics: PoS(Regio2020). (Proceedings of Science; vol. 394).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  28. 2020

  29. Published

    Perturbative linearization of supersymmetric Yang-Mills theory

    Ananth, S., Lechtenfeld, O., Malcha, H., Nicolai, H., Pandey, C. & Pant, S., 29 Oct 2020, In: Journal of high energy physics. 2020, 10, 199.

    Research output: Contribution to journal › Article › Research › peer review

  30. Published

    Supersymmetric Calogero Models from Superfield Gauging

    Ivanov, E. A., Lechtenfeld, O. & Fedoruk, S., 17 Sept 2020, In: Physics of particles and nuclei. 51, 4, p. 551-556 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  31. Published

    From Yang–Mills in de Sitter Space to Electromagnetic Knots

    Lechtenfeld, O., Sept 2020, In: Physics of Particles and Nuclei Letters. 17, 5, p. 701-706 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  32. Published

    On rational electromagnetic fields

    Kumar, K. & Lechtenfeld, O., 17 Aug 2020, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 384, 23, 126445.

    Research output: Contribution to journal › Article › Research › peer review

  33. Published

    On N=2 supersymmetric Ruijsenaars–Schneider models

    Krivonos, S. & Lechtenfeld, O., 10 Aug 2020, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 807, 135545.

    Research output: Contribution to journal › Article › Research › peer review

  34. Published

    New N = 2 superspace Calogero models

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 27 May 2020, In: Journal of high energy physics. 2020, 5, 132.

    Research output: Contribution to journal › Article › Research › peer review

  35. Published

    N=4 supersymmetric Calogero-Sutherland models

    Krivonos, S. & Lechtenfeld, O., 7 Apr 2020, In: Physical Review D. 101, 8, 086010.

    Research output: Contribution to journal › Article › Research › peer review

  36. 2019

  37. E-pub ahead of print

    Extended supersymmetric multiparticle Euler-Calogero-Moser model

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 2 Oct 2019, (E-pub ahead of print) In: Journal of Physics: Conference Series. 1194, 1, 012062.

    Research output: Contribution to journal › Conference article › Research › peer review

  38. E-pub ahead of print

    Rational Maxwell knots via de Sitter space

    Lechtenfeld, O. & Zhilin, G., 2 Oct 2019, (E-pub ahead of print) In: Journal of Physics: Conference Series. 1194, 1, 012068.

    Research output: Contribution to journal › Conference article › Research › peer review

  39. Published

    A new construction of rational electromagnetic knots

    Lechtenfeld, O. & Zhilin, G., 19 Sept 2019, In: Proceedings of Science. 347

    Research output: Contribution to journal › Conference article › Research › peer review

  40. Published

    Skyrme and Faddeev models in the low-energy limit of 4d Yang–Mills–Higgs theories

    Lechtenfeld, O. & Popov, A., Aug 2019, In: Nuclear Physics B. 945, 114675.

    Research output: Contribution to journal › Article › Research › peer review

  41. Published

    Supersymmetric hyperbolic Calogero-Sutherland models by gauging

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., Jul 2019, In: Nuclear Physics B. 944, 114633.

    Research output: Contribution to journal › Article › Research › peer review

  42. Published

    Dual infrared limits of 6d N=(2,0)theory

    Lechtenfeld, O. & Popov, A., 10 Jun 2019, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 793, p. 297-302 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  43. Published

    PT deformation of Calogero-Sutherland models

    Correa, F. & Lechtenfeld, O., May 2019, In: Journal of high energy physics. 2019, 5, 166.

    Research output: Contribution to journal › Article › Research › peer review

  44. Published

    Sasakian quiver gauge theories and instantons on cones over round and squashed seven-spheres

    Geipel, J. C., Lechtenfeld, O., Popov, A. D. & Szabo, R. J., May 2019, In: Nuclear Physics B. 942, p. 103-148 46 p.

    Research output: Contribution to journal › Article › Research › peer review

  45. Published

    Extended supersymmetric Calogero model

    Krivonos, S., Lechtenfeld, O., Provorov, A. & Sutulin, A., 10 Apr 2019, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 791, p. 385-389 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  46. Published

    Supersymmetric many-body Euler–Calogero–Moser model

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 10 Mar 2019, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 790, p. 191-196 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  47. Published

    Spinning extensions of D(2, 1; α) superconformal mechanics

    Galajinsky, A. & Lechtenfeld, O., Mar 2019, In: Journal of high energy physics. 2019, 3, 69.

    Research output: Contribution to journal › Article › Research › peer review

  48. Published

    Deformed N =8 supersymmetric mechanics

    Ivanov, E., Lechtenfeld, O. & Sidorov, S., Feb 2019, In: Symmetry. 11, 2, 135.

    Research output: Contribution to journal › Review article › Research › peer review

  49. 2018

  50. Published

    Skyrme–Faddeev model from 5d super-Yang–Mills

    Lechtenfeld, O. & Popov, A. D., 10 Nov 2018, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 786, p. 39-44 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  51. Published

    Yang-Mills solutions on de Sitter space of any dimension

    Lechtenfeld, O. & Ünal, G., 15 Oct 2018, In: Physical Review D. 98, 8, 085008.

    Research output: Contribution to journal › Article › Research › peer review

  52. Published

    N-extended supersymmetric Calogero models

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 10 Sept 2018, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 784, p. 137-141 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  53. Published

    Pure Yang–Mills Solutions on dS4

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., Sept 2018, In: Physics of particles and nuclei. 49, 5, p. 854-859 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  54. Published

    Skyrme model from 6d N=(2,0) theory

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 10 Aug 2018, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 783, p. 222-226 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  55. Published

    Deformed N= 8 mechanics of (8, 8, 0) multiplets

    Ivanov, E., Lechtenfeld, O. & Sidorov, S., Aug 2018, In: Journal of high energy physics. 2018, 8, 193.

    Research output: Contribution to journal › Article › Research › peer review

  56. Published

    A new construction of rational electromagnetic knots

    Lechtenfeld, O. & Zhilin, G., 12 Jun 2018, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 382, 23, p. 1528-1533 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  57. Published

    Non-Abelian sigma models from Yang–Mills theory compactified on a circle

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 10 Jun 2018, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 781, p. 322-326 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  58. Published

    SU(2|1) supersymmetric mechanics on curved spaces

    Kozyrev, N., Krivonos, S., Lechtenfeld, O. & Sutulin, A., May 2018, In: Journal of high energy physics. 2018, 5, 175.

    Research output: Contribution to journal › Article › Research › peer review

  59. Published

    N=4 supersymmetric mechanics on curved spaces

    Kozyrev, N., Krivonos, S., Lechtenfeld, O., Nersessian, A. & Sutulin, A., 15 Apr 2018, In: Physical Review D. 97, 8, 085015.

    Research output: Contribution to journal › Article › Research › peer review

  60. Published

    Quantum SU(2|1) supersymmetric Calogero-Moser spinning systems

    Fedoruk, S., Ivanov, E., Lechtenfeld, O. & Sidorov, S., Apr 2018, In: Journal of high energy physics. 2018, 4, 43.

    Research output: Contribution to journal › Article › Research › peer review

  61. Published

    Curved WDVV equation and supersymmetric mechanics

    Kozyrev, N., Krivonos, S., Lechtenfeld, O., Nersessian, A. & Sutulin, A., 1 Mar 2018, In: Journal of Physics: Conference Series. 965, 012026.

    Research output: Contribution to journal › Conference article › Research › peer review

  62. 2017

  63. Published

    Finite-action solutions of Yang-Mills equations on de Sitter dS4 and anti-de Sitter AdS4 spaces

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 1 Nov 2017, In: Journal of high energy physics. 2017, 11, 17.

    Research output: Contribution to journal › Article › Research › peer review

  64. Published

    PT deformation of angular Calogero models

    Correa, F. & Lechtenfeld, O., 1 Nov 2017, In: Journal of high energy physics. 2017, 11, 122.

    Research output: Contribution to journal › Article › Research › peer review

  65. Published

    Hidden symmetries of deformed oscillators

    Krivonos, S., Lechtenfeld, O. & Sorin, A., Nov 2017, In: Nuclear Physics B. 924, p. 33-46 14 p.

    Research output: Contribution to journal › Article › Research › peer review

  66. Published

    Solutions to Yang-Mills Equations on Four-Dimensional de Sitter Space

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 11 Aug 2017, In: Physical review letters. 119, 6, 061601.

    Research output: Contribution to journal › Article › Research › peer review

  67. Published

    The tetrahexahedric angular Calogero model

    Correa, F. & Lechtenfeld, O., 4 Apr 2017, In: Journal of Physics: Conference Series. 804, 1, 012011.

    Research output: Contribution to journal › Conference article › Research › peer review

  68. Published

    The tetrahexahedric Calogero model

    Correa, F. & Lechtenfeld, O., Mar 2017, In: Physics of Particles and Nuclei Letters. 14, 2, p. 304-311 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  69. Published

    Curved Witten-Dijkgraaf-Verlinde-Verlinde equation and N=4 mechanics

    Kozyrev, N., Krivonos, S., Lechtenfeld, O., Nersessian, A. & Sutulin, A., 2017, In: Physical Review D. 96, 10, 101702.

    Research output: Contribution to journal › Article › Research › peer review

  70. Published

    Pure Yang–Mills solutions on dS4

    Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 2017, In: Proceedings of Science. 318, 204.

    Research output: Contribution to journal › Conference article › Research › peer review

  71. 2016

  72. Published

    Superstring limit of Yang–Mills theories

    Lechtenfeld, O. & Popov, A. D., 10 Nov 2016, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 762, p. 309-314 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  73. Published

    SU(2|2) supersymmetric mechanics

    Ivanov, E., Lechtenfeld, O. & Sidorov, S., 1 Nov 2016, In: Journal of high energy physics. 2016, 11, 31.

    Research output: Contribution to journal › Article › Research › peer review

  74. Published

    Minimal realization of ℓ-conformal Galilei algebra, Pais-Uhlenbeck oscillators and their deformation

    Krivonos, S., Lechtenfeld, O. & Sorin, A., 1 Oct 2016, In: Journal of high energy physics. 2016, 10, 78.

    Research output: Contribution to journal › Article › Research › peer review

  75. Published

    Superconformal SU(1, 1|n) mechanics

    Galajinsky, A. & Lechtenfeld, O., 1 Sept 2016, In: Journal of high energy physics. 2016, 9, 114.

    Research output: Contribution to journal › Article › Research › peer review

  76. Published

    Spherical Calogero model with oscillator/Coulomb potential: Quantum case

    Correa, F., Hakobyan, T., Lechtenfeld, O. & Nersessian, A., 7 Jun 2016, In: Physical Review D. 93, 12, 125009.

    Research output: Contribution to journal › Article › Research › peer review

  77. Published

    Spherical Calogero model with oscillator/Coulomb potential: Classical case

    Correa, F., Hakobyan, T., Lechtenfeld, O. & Nersessian, A., 7 Jun 2016, In: Physical Review D. 93, 12, 125008.

    Research output: Contribution to journal › Article › Research › peer review

  78. Published

    Sasakian quiver gauge theories and instantons on the conifold

    Geipel, J. C., Lechtenfeld, O., Popov, A. D. & Szabo, R. J., Jun 2016, In: Nuclear Physics B. 907, p. 445-475 31 p.

    Research output: Contribution to journal › Article › Research › peer review

  79. Published

    On Asteroid Engineering

    Lechtenfeld, O., 29 Mar 2016, In: Global Journal of Science Frontier Research. 16

    Research output: Contribution to journal › Article › Research › peer review

  80. Published

    Higher-derivative superparticle in AdS3 space

    Kozyrev, N., Krivonos, S. & Lechtenfeld, O., 10 Mar 2016, In: Physical Review D. 93, 6, 065024.

    Research output: Contribution to journal › Article › Research › peer review

  81. Published

    A Calogero formulation for four-dimensional black-hole microstates

    Lechtenfeld, O. & Nampuri, S., 10 Feb 2016, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 753, p. 263-267 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  82. Published

    Supermembrane limit of Yang-Mills theory

    Lechtenfeld, O. & Popov, A. D., 1 Feb 2016, In: Journal of mathematical physics. 57, 2, 023520.

    Research output: Contribution to journal › Article › Research › peer review

  83. Published

    Calogero, spherically reduced and PT-deformed

    Correa, F. & Lechtenfeld, O., 2016, In: Proceedings of Science. 292, 095.

    Research output: Contribution to journal › Conference article › Research › peer review

  84. Published

    Sasakian quiver gauge theories and instantons on Calabi-Yau cones

    Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 2016, In: Advances in Theoretical and Mathematical Physics. 20, 4, p. 821-882 62 p.

    Research output: Contribution to journal › Article › Research › peer review

  85. 2015

  86. Published

    Sigma models for genuinely non-geometric backgrounds

    Chatzistavrakidis, A., Jonke, L. & Lechtenfeld, O., 1 Nov 2015, In: Journal of high energy physics. 2015, 11, p. 1-36 36 p., 182.

    Research output: Contribution to journal › Article › Research › peer review

  87. Published

    Sasakian quiver gauge theories and instantons on cones over lens 5-spaces

    Lechtenfeld, O., Popov, A. D., Sperling, M. & Szabo, R. J., 1 Oct 2015, In: Nuclear Physics B. 899, p. 848-903 56 p.

    Research output: Contribution to journal › Article › Research › peer review

  88. Published

    The tetrahexahedric angular Calogero model

    Correa, F. & Lechtenfeld, O., 1 Oct 2015, In: Journal of high energy physics. 2015, 10, 191.

    Research output: Contribution to journal › Article › Research › peer review

  89. Published

    Yang-Mills moduli space in the adiabatic limit

    Lechtenfeld, O. & Popov, A. D., 21 Sept 2015, In: Journal of Physics A: Mathematical and Theoretical. 48, 42, 425401.

    Research output: Contribution to journal › Article › Research › peer review

  90. Published

    Auxiliary tensor fields for Sp(2, ℝ) self-duality

    Ivanov, E. A., Lechtenfeld, O. & Zupnik, B. M., 1 Mar 2015, In: Journal of high energy physics. 2015, 3

    Research output: Contribution to journal › Article › Research › peer review

  91. Published

    Instantons on conical half-flat 6-manifolds

    Bunk, S., Lechtenfeld, O., Popov, A. D. & Sperling, M., 2015, In: Journal of high energy physics. 2015, 1, p. 1-38 38 p., 30.

    Research output: Contribution to journal › Article › Research › peer review

  92. Published

    Sigma-model limit of Yang-Mills instantons in higher dimensions

    Deser, A., Lechtenfeld, O. & Popov, A. D., 2015, In: Nuclear Physics B. 894, p. 361-373 13 p.

    Research output: Contribution to journal › Article › Research › peer review

  93. 2014

  94. Published

    Superintegrability of generalized Calogero models with oscillator or Coulomb potential

    Hakobyan, T., Lechtenfeld, O. & Nersessian, A., 25 Nov 2014, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 90, 10, 101701.

    Research output: Contribution to journal › Article › Research › peer review

  95. Published

    Order α′ heterotic domain walls with warped nearly Kähler geometry

    Haupt, A. S., Lechtenfeld, O. & Musaev, E. T., Nov 2014, In: Journal of high energy physics. 2014, 11, 152.

    Research output: Contribution to journal › Article › Research › peer review

  96. Published

    Instantons on sine-cones over Sasakian manifolds

    Bunk, S., Ivanova, T. A., Lechtenfeld, O., Popov, A. D. & Sperling, M., 23 Sept 2014, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 90, 6, 065028.

    Research output: Contribution to journal › Article › Research › peer review

  97. Published

    Workshop on Noncommutative Field Theory and Gravity

    Anagnostopoulos, K., Lüst, D., Nishimura, J., Szabo, R., Zoupanos, G., Lechtenfeld, O., Kawai, H., Steinacker, H. & Watamura, S., 11 Sept 2014, In: Fortschritte der Physik. 62, 9-10, p. 706-708 3 p.

    Research output: Contribution to journal › Editorial in journal › Research › peer review

  98. Published

    The structure of invariants in conformal mechanics

    Hakobyan, T., Karakhanyan, D. & Lechtenfeld, O., 1 Sept 2014, In: Nuclear Physics B. 886, p. 399-420 22 p.

    Research output: Contribution to journal › Article › Research › peer review

  99. Published

    Dirac structures on nilmanifolds and coexistence of fluxes

    Chatzistavrakidis, A., Jonke, L. & Lechtenfeld, O., Jun 2014, In: Nuclear Physics B. 883, 1, p. 59-82 24 p.

    Research output: Contribution to journal › Article › Research › peer review

  100. Published

    Instantons in six dimensions and twistors

    Ivanova, T. A., Lechtenfeld, O., Popov, A. D. & Tormählen, M., May 2014, In: Nuclear Physics B. 882, 1, p. 205-218 14 p.

    Research output: Contribution to journal › Article › Research › peer review

  101. Published

    Nonlinear supersymmetry in the quantum Calogero model

    Correa, F., Lechtenfeld, O. & Plyushchay, M., Apr 2014, In: Journal of high energy physics. 2014, 4, 151.

    Research output: Contribution to journal › Article › Research › peer review

  102. Published

    Higher-derivative N = 4 superparticle in three-dimensional spacetime

    Kozyrev, N., Krivonos, S., Lechtenfeld, O. & Nersessian, A., 24 Feb 2014, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 89, 4, 045013.

    Research output: Contribution to journal › Article › Research › peer review

  103. Published

    On the Gribov problem in Yang-Mills theory

    Lechtenfeld, O., 2014, In: Physics of Particles and Nuclei Letters. 11, 7, p. 830-835 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  104. 2013

  105. Published

    Orbifold instantons, moment maps, and Yang-Mills theory with sources

    Ivanova, T. A., Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 26 Nov 2013, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 88, 10, 105026.

    Research output: Contribution to journal › Article › Research › peer review

  106. Published

    Exact BPS bound for noncommutative baby Skyrmions

    Domrin, A., Lechtenfeld, O., Linares, R. & Maceda, M., 25 Nov 2013, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 727, 1-3, p. 303-307 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  107. Published

    Heterotic G2-manifold compactifications with fluxes and fermionic condensates

    Gemmer, K. P. & Lechtenfeld, O., Nov 2013, In: Journal of high energy physics. 2013, 11, 182.

    Research output: Contribution to journal › Article › Research › peer review

  108. Published

    Field-dependent BRST transformations in Yang-Mills theory

    Lavrov, P. M. & Lechtenfeld, O., 1 Oct 2013, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 725, 4-5, p. 382-385 4 p.

    Research output: Contribution to journal › Article › Research › peer review

  109. Published

    Gribov horizon beyond the Landau gauge

    Lavrov, P. M. & Lechtenfeld, O., 1 Oct 2013, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 725, 4-5, p. 386-388 3 p.

    Research output: Contribution to journal › Article › Research › peer review

  110. Published

    Target duality in N=8 superconformal mechanics and the coupling of dual pairs

    Gonzales, M., Khodaee, S., Lechtenfeld, O. & Toppan, F., 1 Jul 2013, In: Journal of mathematical physics. 54, 7, 072902.

    Research output: Contribution to journal › Article › Research › peer review

  111. Published

    Heterotic string plus five-brane systems with asymptotic $\mathrm{AdS}_3$

    Gemmer, K., Haupt, A. S., Lechtenfeld, O., Nölle, C. & Popov, A. D., 1 Jan 2013, In: Advances in Theoretical and Mathematical Physics. 17, 4, p. 771-827

    Research output: Contribution to journal › Article › Research › peer review

  112. Published

    Auxiliary superfields in N = 1 supersymmetric self-dual electrodynamics

    Ivanov, E., Lechtenfeld, O. & Zupnik, B., 2013, In: Journal of high energy physics. 2013, 5, 133.

    Research output: Contribution to journal › Article › Research › peer review

  113. Published

    N=2 supersymmetric S2 → ℂℙ3 → S4 fibration viewed as superparticle mechanics

    Kozyrev, N., Krivonos, S. & Lechtenfeld, O., 2013, In: Journal of Physics: Conference Series. 411, 1, 012019.

    Research output: Contribution to journal › Conference article › Research › peer review

  114. Published

    New approach to duality-invariant nonlinear electrodynamics

    Ivanov, E., Lechtenfeld, O. & Zupnik, B., 2013, In: Journal of Physics: Conference Series. 474, 1, 012023.

    Research output: Contribution to journal › Conference article › Research › peer review

  115. Published

    On two-dimensional integrable models with a cubic or quartic integral of motion

    Galajinsky, A. & Lechtenfeld, O., 2013, In: Journal of high energy physics. 2013, 9, 113.

    Research output: Contribution to journal › Article › Research › peer review

  116. Published

    The quantum angular Calogero-Moser model

    Feigin, M., Lechtenfeld, O. & Polychronakos, A. P., 2013, In: Journal of high energy physics. 2013, 7, 162.

    Research output: Contribution to journal › Article › Research › peer review

  117. 2012

  118. Published

    Instantons on the six-sphere and twistors

    Lechtenfeld, O. & Popov, A. D., 19 Dec 2012, In: Journal of mathematical physics. 53, 12, 123506.

    Research output: Contribution to journal › Article › Research › peer review

  119. Published

    Action-angle variables and novel superintegrable systems

    Hakobyan, T., Lechtenfeld, O., Nersessian, A., Saghatelian, A. & Yeghikyan, V., Sept 2012, In: Physics of particles and nuclei. 43, 5, p. 577-582 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  120. Published

    Instantons and Chern-Simons flows in 6, 7 and 8 dimensions

    Lechtenfeld, O., Sept 2012, In: Physics of particles and nuclei. 43, 5, p. 569-576 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  121. Published

    The spherical sector of the Calogero model as a reduced matrix model

    Hakobyan, T., Lechtenfeld, O. & Nersessian, A., 11 May 2012, In: Nuclear Physics B. 858, 2, p. 250-266 17 p.

    Research output: Contribution to journal › Article › Research › peer review

  122. Published

    Superconformal mechanics

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 4 May 2012, In: Journal of Physics A: Mathematical and Theoretical. 45, 17, 173001.

    Research output: Contribution to journal › Review article › Research › peer review

  123. Published

    Integrable generalizations of oscillator and Coulomb systems via action-angle variables

    Hakobyan, T., Lechtenfeld, O., Nersessian, A., Saghatelian, A. & Yeghikyan, V., 16 Jan 2012, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 376, 5, p. 679-686 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  124. Published

    Gauged N=4 supersymmetric mechanics with spin supermultiplets: Talk by S.F. at the XXIX International Colloquium on Group-Theoretical Methods in Physics

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 2012, Gauged N=4 supersymmetric mechanics with spin supermultiplets. World Scientific

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  125. Published

    Instantons and Chern-Simons flows in six and seven dimensions: Talk at the Conference on Quantum Field Theory and Gravity `QFTG'12'

    Lechtenfeld, O., 2012, Instantons and Chern-Simons flows in six and seven dimensions. Vol. 128. p. 103-108

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  126. Published

    Nahm equations in supersymmetric mechanics

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 2012, In: Journal of high energy physics. 2012, 6, 147.

    Research output: Contribution to journal › Article › Research › peer review

  127. Published

    Nearly Kähler heterotic compactifications with fermion condensates

    Chatzistavrakidis, A., Lechtenfeld, O. & Popov, A. D., 2012, In: Journal of high energy physics. 2012, 4, 114.

    Research output: Contribution to journal › Article › Research › peer review

  128. 2011

  129. Published

    New super-Calogero models and OSp(4ǀ2) superconformal mechanics

    Fedoruk, S. A., Ivanov, E. A. & Lechtenfeld, O., Jun 2011, In: Physics of atomic nuclei. 74, 6, p. 870-875 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  130. Published

    Chern-Simons flows on Aloff-Wallach spaces and spin(7) instantons

    Haupt, A. S., Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 27 May 2011, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 83, 10, 105028.

    Research output: Contribution to journal › Article › Research › peer review

  131. E-pub ahead of print

    An N=8 superconformal particle in the half-plane

    Lechtenfeld, O. & Toppan, F., 20 May 2011, (E-pub ahead of print).

    Research output: Working paper/Preprint › Preprint

  132. Published

    Invariants of the spherical sector in conformal mechanics

    Hakobyan, T., Lechtenfeld, O., Nersessian, A. & Saghatelian, A., 4 Feb 2011, In: Journal of Physics A: Mathematical and Theoretical. 44, 5, 055205.

    Research output: Contribution to journal › Article › Research › peer review

  133. Published

    Is soft breaking of BRST symmetry consistent?

    Lavrov, P., Lechtenfeld, O. & Reshetnyak, A., 2011, In: Journal of high energy physics. 2011, 10, 043.

    Research output: Contribution to journal › Article › Research › peer review

  134. Published

    Many-particle mechanics with D(2, 1;α) superconformal symmetry

    Krivonos, S. & Lechtenfeld, O., 2011, In: Journal of high energy physics. 2011, 2, 42.

    Research output: Contribution to journal › Article › Research › peer review

  135. Published

    N=4 multi-particle mechanics, WDVV equation and roots

    Lechtenfeld, O., Schwerdtfeger, K. & Thürigen, J., 2011, In: Symmetry, Integrability and Geometry: Methods and Applications (SIGMA). 7, 023.

    Research output: Contribution to journal › Article › Research › peer review

  136. Published

    Noncommutative deformation of the Ward metric

    Goffeng, M. & Lechtenfeld, O., 2011, In: Proceedings of Science.

    Research output: Contribution to journal › Conference article › Research › peer review

  137. Published

    Yang-Mills instantons on cones and sine-cones over nearly Kähler manifolds

    Gemmer, K. P., Lechtenfeld, O., Nölle, C. & Popov, A. D., 2011, In: Journal of high energy physics. 2011, 9, 103.

    Research output: Contribution to journal › Article › Research › peer review

  138. 2010

  139. Published

    Action-angle variables for dihedral systems on the circle

    Lechtenfeld, O., Nersessian, A. & Yeghikyan, V., 18 Oct 2010, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 374, 46, p. 4647-4652 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  140. Published

    N=4 supersymmetry and the belavin-polyakov-shvarts-tyupkin instanton

    Krivonos, S., Lechtenfeld, O. & Sutulin, A., 16 Apr 2010, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 81, 8, 085021.

    Research output: Contribution to journal › Article › Research › peer review

  141. Published

    N = 4 mechanics, WDVV equations and polytopes

    Lechtenfeld, O., 1 Feb 2010, In: Physics of atomic nuclei. 73, 2, p. 375-383 9 p.

    Research output: Contribution to journal › Article › Research › peer review

  142. Published

    Hidden symmetries of integrable conformal mechanical systems

    Hakobyan, T., Krivonos, S., Lechtenfeld, O. & Nersessian, A., 25 Jan 2010, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 374, 6, p. 801-806 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  143. Published

    A new class of solutions to the WDVV equation

    Lechtenfeld, O. & Polovnikov, K., 11 Jan 2010, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 374, 4, p. 504-506 3 p.

    Research output: Contribution to journal › Article › Research › peer review

  144. Published

    Heterotic compactifications on nearly Kähler manifolds

    Lechtenfeld, O., Nölle, C. & Popov, A. D., 2010, In: Journal of high energy physics. 2010, 9, 74.

    Research output: Contribution to journal › Article › Research › peer review

  145. Published

    New D(2, 1;α) mechanics with spin variables

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 2010, In: Journal of high energy physics. 2010, 4, 129.

    Research output: Contribution to journal › Article › Research › peer review

  146. Published

    Noncommutative baby Skyrmions

    Ioannidou, T. & Lechtenfeld, O., 2010, In: Proceedings of Science.

    Research output: Contribution to journal › Conference article › Research › peer review

  147. Published

    On the non-commutative CP1 model

    Lechtenfeld, O. & MacEda, M., 2010, Gravitational Physics: Testing Gravity from Submillimeter to Cosmic Scale - Proceedings of the VIII Mexican School on Gravitation and Mathematical Physics. p. 208-212 5 p. (AIP Conference Proceedings; vol. 1256).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  148. Published

    The Kähler potential of the non-commutative C P1 model

    Lechtenfeld, O. & MacEda, M., 2010, Recent Developments in Gravitation and BEC's Phenomenology - IV Mexican Meeting on Mathematical and Experimental Physics: Symposium on Gravitation BEC's Phenomenology. p. 187-195 9 p. (AIP Conference Proceedings; vol. 1318).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  149. Published

    The noncommutative ward metric

    Lechtenfeld, O. & Maceda, M., 2010, In: Symmetry, Integrability and Geometry: Methods and Applications (SIGMA). 6, 045.

    Research output: Contribution to journal › Review article › Research › peer review

  150. Published

    Yang-Mills Flows on Nearly Kähler Manifolds and G2-Instantons

    Harland, D., Ivanova, T. A., Lechtenfeld, O. & Popov, A. D., 2010, In: Communications in Mathematical Physics. 300, 1, p. 185-204 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  151. Published

    Yang-Mills instantons and dyons on homogeneous G2-manifolds

    Bauer, I., Ivanova, T. A., Lechtenfeld, O. & Lubbe, F., 2010, In: Journal of high energy physics. 2010, 10, 44.

    Research output: Contribution to journal › Article › Research › peer review

  152. 2009

  153. Published

    Instantons and Yang-Mills flows on coset spaces

    Ivanova, T. A., Lechtenfeld, O., Popov, A. D. & Rahn, T., Oct 2009, In: Letters in mathematical physics. 89, 3, p. 231-247 17 p.

    Research output: Contribution to journal › Article › Research › peer review

  154. Published

    Harmonic N=2 mechanics

    Galajinsky, A. & Lechtenfeld, O., 10 Sept 2009, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 80, 6, 065012.

    Research output: Contribution to journal › Article › Research › peer review

  155. Published

    N = 4 superconformal n-particle mechanics via superspace

    Krivonos, S., Lechtenfeld, O. & Polovnikov, K., 21 Aug 2009, In: Nuclear Physics B. 817, 3, p. 265-283 19 p.

    Research output: Contribution to journal › Article › Research › peer review

  156. Published

    SU(2) reduction in N=4 supersymmetric mechanics

    Krivonos, S. & Lechtenfeld, O., 20 Aug 2009, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 80, 4, 045019.

    Research output: Contribution to journal › Article › Research › peer review

  157. Published

    Noncommutative baby Skyrmions

    Ioannidou, T. & Lechtenfeld, O., 3 Aug 2009, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 678, 5, p. 508-511 4 p.

    Research output: Contribution to journal › Article › Research › peer review

  158. Published

    Supersymmetric Calogero models by gauging

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 1 May 2009, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 79, 10, 105015.

    Research output: Contribution to journal › Article › Research › peer review

  159. Published

    ABJM models in N= 3 harmonic superspace

    Buchbinder, I. L., Ivanov, E. A., Lechtenfeld, O., Pletnev, N. G., Samsonov, I. B. & Zupnik, B. M., 2009, In: Journal of high energy physics. 2009, 3, 096.

    Research output: Contribution to journal › Article › Research › peer review

  160. Published

    N=4 mechanics, WDVV equations and roots

    Galajinsky, A., Lechtenfeld, O. & Polovnikov, K., 2009, In: Journal of high energy physics. 2009, 3, 113.

    Research output: Contribution to journal › Article › Research › peer review

  161. Published

    On the N=2 supersymmetric Camassa-Holm and Hunter-Saxton equations

    Lenells, J. & Lechtenfeld, O., 2009, In: Journal of mathematical physics. 50, 1, 012704.

    Research output: Contribution to journal › Article › Research › peer review

  162. Published

    OSp(4|2) superconformal mechanics

    Fedoruk, S., Ivanov, E. & Lechtenfeld, O., 2009, In: Journal of high energy physics. 2009, 8, 081.

    Research output: Contribution to journal › Article › Research › peer review

  163. Published

    Quantum N = 3, D = 3 Chern-Simons matter theories in harmonic superspace

    Buchbinder, I. L., Ivanov, E. A., Lechtenfeld, O., Pletnev, N. G., Samsonov, I. B. & Zupnik, B. M., 2009, In: Journal of high energy physics. 2009, 10, 075.

    Research output: Contribution to journal › Article › Research › peer review

  164. Published

    The noncommutative sine-Gordon breather

    Fischer, A. & Lechtenfeld, O., 2009, In: Journal of mathematical physics. 50, 9, 095201.

    Research output: Contribution to journal › Article › Research › peer review

  165. 2008

  166. Published

    Yang-Mills instantons and dyons on group manifolds

    Ivanova, T. A. & Lechtenfeld, O., 4 Dec 2008, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 670, 1, p. 91-94 4 p.

    Research output: Contribution to journal › Article › Research › peer review

  167. Published

    N = 4 superparticle and super-Yang-Mills theory in USp (4) harmonic superspace

    Buchbinder, I. L., Lechtenfeld, O. & Samsonov, I. B., 11 Oct 2008, In: Nuclear Physics B. 802, 1-2, p. 208-246 39 p.

    Research output: Contribution to journal › Article › Research › peer review

  168. Published

    Gauge theory in deformed N = (1, 1) superspace

    Buchbinder, I. L., Ivanov, E. A., Lechtenfeld, O., Samsonov, I. B. & Zupnik, B. M., Sept 2008, In: Physics of particles and nuclei. 39, 5, p. 759-797 39 p.

    Research output: Contribution to journal › Article › Research › peer review

  169. Published

    SU(3)-equivariant quiver gauge theories and nonabelian vortices

    Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 1 Aug 2008, In: Journal of high energy physics. 2008, 8, 093.

    Research output: Contribution to journal › Article › Research › peer review

  170. Published

    N = 2 Supersymmetric unconstrained matrix GNLS hierarchies are consistent

    Delduc, F., Lechtenfeld, O. & Sorin, A. S., Jun 2008, In: Letters in mathematical physics. 84, 2-3, p. 109-122 14 p.

    Research output: Contribution to journal › Article › Research › peer review

  171. Published

    Non-anticommutative solitons

    Ketov, S. V. & Lechtenfeld, O., 29 May 2008, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 663, 4, p. 353-359 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  172. External

    Superfield formulation of nonlinear N=4 supermultiplets

    Bellucci, S., Krivonos, S., Lechtenfeld, O. & Shcherbakov, A., 22 Feb 2008, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 77, 4, 045026.

    Research output: Contribution to journal › Article › Research › peer review

  173. Published

    Hierarchy of N = 8 mechanics models

    Ivanov, E., Lechtenfeld, O. & Sutulin, A., 21 Feb 2008, In: Nuclear Physics B. 790, 3, p. 493-523 31 p.

    Research output: Contribution to journal › Article › Research › peer review

  174. Published

    Supersymmetric noncommutative solitons

    Lechtenfeld, O., 1 Feb 2008, In: Journal of Physics: Conference Series. 103, 1, 012016.

    Research output: Contribution to journal › Article › Research › peer review

  175. Published

    Construction of noncommutative instantons in 4k dimensions

    Brödel, J., Ivanova, T. A. & Lechtenfeld, O., 30 Jan 2008, In: Modern Physics Letters A. 23, 3, p. 179-189 11 p.

    Research output: Contribution to journal › Article › Research › peer review

  176. Published

    Noncommutative solitons

    Lechtenfeld, O., 2008, Recent Developments in Gravitation and Cosmology - 3rd Mexican Meeting on Mathematical and Experimental Physics. p. 37-51 15 p. (AIP Conference Proceedings; vol. 977).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  177. Published

    WDVV solutions from orthocentric polytopes and Veselov systems

    Lechtenfeld, O., 2008, Problems of Modern Theoretical Physics. p. 256-265

    Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research

  178. 2007

  179. Published

    N = 4 superconformal Calogero models

    Galajinsky, A., Polovnikov, K. & Lechtenfeld, O., 1 Nov 2007, In: Journal of high energy physics. 2007, 11, 008.

    Research output: Contribution to journal › Article › Research › peer review

  180. Published

    Scattering of noncommutative waves and solitons in a supersymmetric chiral model in 2 + 1 dimensions

    Gutschwager, C., Lechtenfeld, O. & Ivanova, T. A., 1 Nov 2007, In: Journal of high energy physics. 2007, 11, 052.

    Research output: Contribution to journal › Article › Research › peer review

  181. Published

    Well-posedness and blow-up phenomena for the 2-component Camassa-Holm equation

    Escher, J., Lechtenfeld, O. & Yin, Z., Nov 2007, In: Discrete and Continuous Dynamical Systems. 19, 3, p. 493-513 21 p.

    Research output: Contribution to journal › Conference article › Research › peer review

  182. Published

    Quantum aspects of the noncommutative Sine-Gordon model

    Kürkçüoglu, S. & Lechtenfeld, O., 1 Sept 2007, In: Journal of high energy physics. 2007, 9, 020.

    Research output: Contribution to journal › Article › Research › peer review

  183. Published

    Noncommutative solitons in a supersymmetric chiral model in 2+1 dimensions

    Lechtenfeld, O. & Popov, A. D., 1 Jun 2007, In: Journal of high energy physics. 2007, 6, 065.

    Research output: Contribution to journal › Article › Research › peer review

  184. Published

    Quiver gauge theory and noncommutative vortices

    Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 2007, In: Progress of Theoretical Physics Supplement. 171, p. 258-268 11 p.

    Research output: Contribution to journal › Article › Research › peer review

  185. 2006

  186. Published

    Calogero models and nonlocal conformal transformations

    Galajinsky, A., Lechtenfeld, O. & Polovnikov, K., 14 Dec 2006, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 643, 3-4, p. 221-227 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  187. Published

    Vector-multiplet effective action in the non-anticommutative charged hypermultiplet model

    Buchbinder, I. L., Lechtenfeld, O. & Samsonov, I. B., 4 Dec 2006, In: Nuclear Physics B. 758, 1-2, p. 185-203 19 p.

    Research output: Contribution to journal › Article › Research › peer review

  188. Published

    Rank two quiver gauge theory, graded connections and noncommutative vortices

    Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 1 Sept 2006, In: Journal of high energy physics. 2006, 9, 054.

    Research output: Contribution to journal › Article › Research › peer review

  189. Published

    Noncommutative instantons on C Pn

    Ivanova, T. A. & Lechtenfeld, O., 10 Aug 2006, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 639, 3-4, p. 407-410 4 p.

    Research output: Contribution to journal › Article › Research › peer review

  190. Published

    Non-singlet Q-deformation of the N = (1, 1) gauge multiplet in harmonic superspace

    De Castro, A., Ivanov, E., Lechtenfeld, O. & Quevedo, L., 17 Jul 2006, In: Nuclear Physics B. 747, 1-2, p. 1-24 24 p.

    Research output: Contribution to journal › Article › Research › peer review

  191. Published

    Moduli-space dynamics of noncommutative abelian sigma-model solitons

    Klawunn, M., Lechtenfeld, O. & Petersen, S., 1 Jul 2006, In: Journal of high energy physics. 2006, 6, 028.

    Research output: Contribution to journal › Article › Research › peer review

  192. Published

    Renormalizability of nonanticommutative N = (1,1) theories with singlet deformation

    Buchbinder, I. L., Ivanov, E. A., Lechtenfeld, O., Samsonov, I. B. & Zupnik, B. M., 24 Apr 2006, In: Nuclear Physics B. 740, 3, p. 358-385 28 p.

    Research output: Contribution to journal › Article › Research › peer review

  193. Published

    Emergence of time from dimensional reduction in noncommutative geometry

    Chu, C. S. & Lechtenfeld, O., 14 Mar 2006, In: Modern Physics Letters A. 21, 8, p. 639-647 9 p.

    Research output: Contribution to journal › Article › Research › peer review

  194. Published

    Matrix models and D-branes in twistor string theory

    Lechtenfeld, O. & Sämann, C., 1 Mar 2006, In: Journal of high energy physics. 3, p. 37-74 38 p.

    Research output: Contribution to journal › Article › Research › peer review

  195. Published

    Non-singlet Q-deformations of N=2 gauge theories

    De Castro, A., Ivanov, E., Lechtenfeld, O. & Quevedo, L., 2006, SUSY 2005: 13th International Conference on Supersymmetry and Unification of Fundamental Interactions: The Millennium Window to Particle Physics.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  196. 2005

  197. Published

    Time-space noncommutative Abelian solitons

    Chu, C. S. & Lechtenfeld, O., 6 Oct 2005, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 625, 1-2, p. 145-155 11 p.

    Research output: Contribution to journal › Article › Research › peer review

  198. Published

    Noncommutative sine-Gordon model

    Lechtenfeld, O., May 2005, In: Fortschritte der Physik. 53, 5-6, p. 500-505 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  199. Published

    Noncommutative instantons in 4k dimensions

    Ivanova, T. A. & Lechtenfeld, O., 14 Apr 2005, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 612, 1-2, p. 65-74 10 p.

    Research output: Contribution to journal › Article › Research › peer review

  200. Published

    Sigma-model solitons in the noncommutative plane: Construction and stability analysis

    Domrin, A. V., Lechtenfeld, O. & Petersen, S., Mar 2005, In: Journal of high energy physics. 3, p. 1009-1042 34 p.

    Research output: Contribution to journal › Article › Research › peer review

  201. Published

    Non-anticommutative deformation of N = (1, 1) hypermultiplets

    Ivanov, E., Lechtenfeld, O. & Zupnik, B., 14 Feb 2005, In: Nuclear Physics B. 707, 1-2, p. 69-86 18 p.

    Research output: Contribution to journal › Article › Research › peer review

  202. Published

    Integrable noncommutative sine-Gordon model

    Lechtenfeld, O., Mazzanti, L., Penati, S., Popov, A. D. & Tamassia, L., 24 Jan 2005, In: Nuclear Physics B. 705, 3, p. 477-503 27 p.

    Research output: Contribution to journal › Article › Research › peer review

  203. Published

    Non-anticommutative chiral singlet deformation of N = (1,1,) gauge theory

    Ferrara, S., Ivanov, E., Lechtenfeld, O., Sokatchev, E. & Zupnik, B., 3 Jan 2005, In: Nuclear Physics B. 704, 1-2, p. 154-180 27 p.

    Research output: Contribution to journal › Article › Research › peer review

  204. Published

    Noncommutative solitons: Lectures at the Int. Sendai-Beijing Joint Workshop on Noncommutative Geometry and Physics

    Lechtenfeld, O., 2005, Noncommutative solitons. World Scientific, Vol. 2007. p. 175-200

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  205. Published

    Non-singlet Q-deformations of N=2 gauge theories: Talk by A.D.C. at JINR workshop ``Supersymmetries and Quantum Symmetries '05"

    Lechtenfeld, O., 2005, Non-singlet Q-deformations of N=2 gauge theories. p. 116-121

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  206. 2004

  207. Published

    ABC of N = 8, d = 1 supermultiplets

    Bellucci, S., Ivanov, E., Krivonos, S. & Lechtenfeld, O., 1 Nov 2004, In: Nuclear Physics B. 699, 1-2, p. 226-252 27 p.

    Research output: Contribution to journal › Article › Research › peer review

  208. Published

    Noncommutative sine-gordon model

    Lechtenfeld, O., Nov 2004, In: Czechoslovak Journal of Physics. 54, 11, p. 1351-1357 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  209. Published

    Noncommutative moduli for multi-instantons

    Ivanova, T. A., Lechtenfeld, O. & Müller-Ebhardt, H., 20 Oct 2004, In: Modern Physics Letters A. 19, 32, p. 2419-2430 12 p.

    Research output: Contribution to journal › Article › Research › peer review

  210. Published

    Supertwistors and cubic string field theory for open N = 2 strings

    Lechtenfeld, O. & Popov, A. D., 23 Sept 2004, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 598, 1-2, p. 113-120 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  211. Published

    Noncommutative instantons and solitons

    Lechtenfeld, O., Jun 2004, In: Fortschritte der Physik. 52, 6-7, p. 596-605 10 p.

    Research output: Contribution to journal › Article › Research › peer review

  212. Published

    N = 8 superconformal mechanics

    Bellucci, S., Ivanov, E., Krivonos, S. & Lechtenfeld, O., 26 Apr 2004, In: Nuclear Physics B. 684, 3, p. 321-350 30 p.

    Research output: Contribution to journal › Article › Research › peer review

  213. Published

    N=4, d=1 supermultiplets from nonlinear realizations of D(2, 1; α)

    Ivanov, E., Krivonos, S. & Lechtenfeld, O., 21 Feb 2004, In: Classical and quantum gravity. 21, 4, p. 1031-1050 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  214. Published

    Nilpotent deformations of N = 2 superspace

    Ivanov, E., Zupnik, B. & Lechtenfeld, O., 1 Feb 2004, In: Journal of high energy physics. 8, 2, p. 331-346 16 p.

    Research output: Contribution to journal › Article › Research › peer review

  215. Published

    Noncommutative monopoles and Riemann-Hilbert problems

    Lechtenfeld, O. & Popov, A. D., 1 Jan 2004, In: Journal of high energy physics. 8, 1, p. 1777-1821 45 p.

    Research output: Contribution to journal › Article › Research › peer review

  216. Published

    A note on fermionic flows of the N=(1|1) supersymmetric Toda lattice hierarchy

    Lechtenfeld, O. & Sorin, A. S., 2004, In: Journal of Nonlinear Mathematical Physics. 11, 3, p. 294-296 3 p.

    Research output: Contribution to journal › Article › Research › peer review

  217. Published

    Nonanticommutative N=(1,1) Euclidean superspace

    Ivanov, E., Lechtenfeld, O. & Zupnik, B., 2004, 5th International Seminar on Supersymmetries and Quantum Symmetries.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  218. 2003

  219. Published

    Noncommutative instantons in higher dimensions, vortices and topological K-cycles

    Lechtenfeld, O., Popov, A. D. & Szabo, R. J., 1 Dec 2003, In: Journal of high energy physics. 7, 12, p. 505-537 33 p.

    Research output: Contribution to journal › Article › Research › peer review

  220. Published

    N = 4 supersymmetric mechanics in harmonic superspace

    Ivanov, E. & Lechtenfeld, O., 1 Sept 2003, In: Journal of high energy physics. 7, 9, p. 1725-1757 33 p.

    Research output: Contribution to journal › Article › Research › peer review

  221. Published

    Noncommutative multi-instantons on ℝ2n x S2

    Ivanova, T. A. & Lechtenfeld, O., 7 Aug 2003, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 567, 1-2, p. 107-115 9 p.

    Research output: Contribution to journal › Article › Research › peer review

  222. Published

    New variant of N = 4 superconformal mechanics

    Ivanov, E., Krivonos, S. & Lechtenfeld, O., 1 Mar 2003, In: Journal of high energy physics. 7, 3, p. 317-336 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  223. Published

    On nonperturbative solutions of superstring field theory

    Kling, A., Lechtenfeld, O., Popov, A. D. & Uhlmann, S., 2 Jan 2003, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 551, 1-2, p. 193-201 9 p.

    Research output: Contribution to journal › Article › Research › peer review

  224. Published

    Non-anticommutative N=(1,1) Euclidean superspace: Talk by E.I. at the workshop ``Supersymmetries and Quantum Symmetries''

    Lechtenfeld, O., 2003, SQS '03. p. 193-201

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  225. Published

    Noncommutative instantons and solitons

    Lechtenfeld, O., 2003, In: Proceedings of Science. 11

    Research output: Contribution to journal › Conference article › Research › peer review

  226. Published

    Solving string field equations: New uses for old tools

    Kling, A., Lechtenfeld, O., Popov, A. D. & Uhlmann, S., 2003, In: Fortschritte der Physik. 51, 7-8, p. 775-780 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  227. 2002

  228. Published

    Noncommutative instantons via dressing and splitting approaches

    Horváth, Z., Lechtenfeld, O. & Wolf, M., 1 Dec 2002, In: Journal of high energy physics. 6, 12, p. 1297-1315 19 p.

    Research output: Contribution to journal › Article › Research › peer review

  229. Published

    Exact solutions of Berkovits' string field theory

    Lechtenfeld, O., Popov, A. D. & Uhlmann, S., 19 Aug 2002, In: Nuclear Physics B. 637, 1-3, p. 119-142 24 p.

    Research output: Contribution to journal › Article › Research › peer review

  230. Published

    Non-commutative 't Hooft instantons

    Lechtenfeld, O. & Popov, A. D., 1 Mar 2002, In: Journal of high energy physics. 6, 3, p. 967-989 23 p.

    Research output: Contribution to journal › Article › Research › peer review

  231. External

    Light-cone gauge for N = 2 strings

    Lechtenfeld, O. & Siegel, W., 2002, In: Russian physics journal. 45, 7, p. 712-718 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  232. 2001

  233. Published

    Scattering of noncommutative solitons in 2 + 1 dimensions

    Lechtenfeld, O. & Popov, A. D., 20 Dec 2001, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 523, 1-2, p. 178-184 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  234. Published

    A heterotic N=2 string with space-time supersymmetry

    Bellucci, S., Galajinsky, A. & Lechtenfeld, O., 27 Aug 2001, In: Nuclear Physics B. 609, 3, p. 410-428 19 p.

    Research output: Contribution to journal › Article › Research › peer review

  235. Published

    Open N = 2 strings in a B-field background and noncommutative self-dual Yang-Mills

    Lechtenfeld, O., Popov, A. D. & Spendig, B., 17 May 2001, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 507, 1-4, p. 317-326 10 p.

    Research output: Contribution to journal › Article › Research › peer review

  236. Published

    Partial spontaneous breaking of two-dimensional supersymmetry

    Ivanov, E., Krivonos, S., Lechtenfeld, O. & Zupnik, B., 23 Apr 2001, In: Nuclear Physics B. 600, 2, p. 235-271 37 p.

    Research output: Contribution to journal › Article › Research › peer review

  237. Published

    Hidden symmetries of the open N = 2 string

    Ivanova, T. A. & Lechtenfeld, O., 20 Jan 2001, In: International Journal of Modern Physics A. 16, 2, p. 303-329 27 p.

    Research output: Contribution to journal › Article › Research › peer review

  238. Published

    Hidden N=(2|2) supersymmetry of the N=(1|1) supersymmetric toda lattice hierarchy

    Lechtenfeld, O. & Sorin, A., 2001, In: Journal of Nonlinear Mathematical Physics. 8, 2, p. 183-195 13 p.

    Research output: Contribution to journal › Article › Research › peer review

  239. Published

    Hidden symmetries of the open N=2 string

    Ivanova, T. A. & Lechtenfeld, O., 2001, In: Int.J.Mod.Phys.A.

    Research output: Contribution to journal › Article › Research › peer review

  240. Published

    Non-commutative multi-solitons in 2+1 dimensions

    Lechtenfeld, O. & Popov, A. D., 2001, In: Journal of high energy physics. 5, 11, p. 1-31 31 p.

    Research output: Contribution to journal › Article › Research › peer review

  241. Published

    Noncommutative solitons in open n = 2 string theory

    Lechtenfeld, O., Popov, A. D. & Spendig, B., 2001, In: Journal of high energy physics. 5, 6, p. 1-17 17 p.

    Research output: Contribution to journal › Article › Research › peer review

  242. 2000

  243. Published

    N=2 quantum string scattering

    Chalmers, G., Lechtenfeld, O. & Niemeyer, B., 18 Dec 2000, In: Nuclear Physics B. 591, 1-2, p. 39-76 38 p.

    Research output: Contribution to journal › Article › Research › peer review

  244. Published

    On the integrability of covariant field theory for open N = 2 strings

    Lechtenfeld, O. & Popov, A. D., 23 Nov 2000, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 494, 1-2, p. 148-154 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  245. Published

    Closed N = 2 strings: Picture-changing, hidden symmetries and SDG hierarchy

    Lechtenfeld, O. & Popov, A. D., 20 Oct 2000, In: International Journal of Modern Physics A. 15, 26, p. 4191-4236 46 p.

    Research output: Contribution to journal › Article › Research › peer review

  246. Published

    Double-vector multiplet and partially broken N = 4, d = 3 supersymmetry

    Ivanov, E., Krivonos, S. & Lechtenfeld, O., 10 Aug 2000, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 487, 1-2, p. 192-200 9 p.

    Research output: Contribution to journal › Article › Research › peer review

  247. Published

    Supersymmetric KP hierarchy in N = 1 superspace and its N = 2 reductions

    Lechtenfeld, O. & Sorin, A., 7 Feb 2000, In: Nuclear Physics B. 566, 3, p. 489-510 22 p.

    Research output: Contribution to journal › Article › Research › peer review

  248. Published

    Real forms of the complex twisted N=2 supersymmetric toda chain hierarchy in real N=1 and twisted N=2 superspaces

    Lechtenfeld, O. & Sorin, A., 2000, In: Journal of Nonlinear Mathematical Physics. 7, 4, p. 433-444 12 p.

    Research output: Contribution to journal › Article › Research › peer review

  249. Published

    Strings '99. Proceedings, Conference, Potsdam, Germany, July 19-24, 1999

    Lechtenfeld, O. (Editor), Louis, J. (Editor), Lust, D. (Editor) & Nicolai, H. (Editor), 2000, (Class.Quant.Grav.)

    Research output: Book/Report › Anthology › Research

  250. Published

    Ward identities and the vanishing theorem for loop amplitudes of the closed N=2 string

    Junemann, K. & Lechtenfeld, O., 2000, In: Phys.Lett.B.

    Research output: Contribution to journal › Article › Research › peer review

  251. 1999

  252. Published

    Fermionic flows and tau function of the N = (1|1) superconformal Toda lattice hierarchy

    Lechtenfeld, O. & Sorin, A., 27 Sept 1999, In: Nuclear Physics B. 557, 3, p. 535-547 13 p.

    Research output: Contribution to journal › Article › Research › peer review

  253. Published

    Non-local symmetries of the closed N = 2 string

    Jünemann, K., Lechtenfeld, O. & Popov, A. D., 24 May 1999, In: Nuclear Physics B. 548, 1-3, p. 449-474 26 p.

    Research output: Contribution to journal › Article › Research › peer review

  254. Published

    String-induced Yang-Mills coupling to self-dual gravity

    Devchand, C. & Lechtenfeld, O., 25 Jan 1999, In: Nuclear Physics B. 539, 1-2, p. 309-328 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  255. Published

    Chiral BRST cohomology of N = 2 strings at arbitrary ghost and picture number

    Jünemann, K. & Lechtenfeld, O., 1999, In: Communications in Mathematical Physics. 203, 1, p. 53-69 17 p.

    Research output: Contribution to journal › Article › Research › peer review

  256. Published

    Mathematics and physics of N=2 strings

    Lechtenfeld, O., 1999, Supersymmetries and Quantum Symmetries '99. p. 79-89

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  257. Published

    Strings '99: Proceedings of the Conference in Potsdam, Germany, 19-24 July 1999

    Lechtenfeld, O. (Editor), Louis, J. (Editor), Lüst, D. (Editor) & Nicolai, H. (Editor), 1999

    Research output: Book/Report › Conference proceeding › Research

  258. Published

    Towards a stringy extension of self-dual super Yang-Mills

    Galajinsky, A. & Lechtenfeld, O., 1999, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 460, 3-4, p. 288-294 7 p.

    Research output: Contribution to journal › Article › Research › peer review

  259. 1998

  260. E-pub ahead of print

    Manifestly invariant actions for harmonic self-dual gauge theory

    Lechtenfeld, O. & Zupnik, B. M., 30 Dec 1998, (E-pub ahead of print).

    Research output: Working paper/Preprint › Preprint

  261. Published

    Extended self-dual Yang-Mills from the N = 2 string

    Devchand, C. & Lechtenfeld, O., 13 Apr 1998, In: Nuclear Physics B. 516, 1-2, p. 255-272 18 p.

    Research output: Contribution to journal › Article › Research › peer review

  262. Published

    Scalar deformations of Schwarzschild holes and their stability

    Dennhardt, H. & Lechtenfeld, O., 20 Feb 1998, In: International Journal of Modern Physics A. 13, 5, p. 741-764 24 p.

    Research output: Contribution to journal › Article › Research › peer review

  263. E-pub ahead of print

    Manifestly invariant actions for harmonic selfdual gauge theory

    Lechtenfeld, O. & Zupnik, B., 1998, (E-pub ahead of print) (ArXiv).

    Research output: Working paper/Preprint › Preprint

  264. Published

    On the selfdual geometry of N=2 strings

    Devchand, C. & Lechtenfeld, O., 1998, 31st International Ahrenshoop Symposium on the Theory of Elementary Particles.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  265. 1997

  266. Published

    Path-integral quantization of the (2,2) string

    Bischoff, J. & Lechtenfeld, O., 30 Oct 1997, In: International Journal of Modern Physics A. 12, 27, p. 4933-4971 39 p.

    Research output: Contribution to journal › Article › Research › peer review

  267. External

    N = 2 worldsheet instantons yield cubic self-dual Yang-Mills

    Lechtenfeld, O. & Siegel, W., 17 Jul 1997, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 405, 1-2, p. 49-54 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  268. Published

    Restoring reality for the self-dual N = 2 string

    Bischoff, J. & Lechtenfeld, O., 2 Jan 1997, In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 390, 1-4, p. 153-160 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  269. Published

    On the self-dual geometry of N=2 strings

    Lechtenfeld, O., 1997, Theory of Elementary Particles. p. 58-63

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  270. 1996

  271. Published

    Integration measure and spectral flow in the critical N=2 string

    Lechtenfeld, O., Jun 1996, In: Nuclear Physics B - Proceedings Supplements. 49, 1-3, p. 51-56 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  272. Published

    The self-dual critical N=2 string

    Lechtenfeld, O., 1996, X Int. Conference `Problems of Quantum Field Theory'. p. 348-354

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  273. Published

    The selfdual critical N=2 string

    Lechtenfeld, O., 1996, 10th International Conference on Problems of Quantum Field Theory (Alushta 96).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  274. Published

    The solution of the d-dimensional twisted group lattices

    Lechtenfeld, O. & Samuel, S., 1996, In: International Journal of Modern Physics A. 11, 18, p. 3227-3246 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  275. 1995

  276. Published

    Four-dimensional twisted group lattices

    Lechtenfeld, O. & Samuel, S., 28 Aug 1995, In: Nuclear Physics, Section B. 449, 1-2, p. 406-432 27 p.

    Research output: Contribution to journal › Article › Research › peer review

  277. Published

    The string measure and spectral flow of critical N = 2 strings

    Ketov, S. V. & Lechtenfeld, O., 6 Jul 1995, In: Physics Letters B. 353, 4, p. 463-470 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  278. Published

    The GSO projection, BRST cohomology and picture-changing in N = 2 string theory

    Bischoff, J., Ketov, S. V. & Lechtenfeld, O., 27 Mar 1995, In: Nuclear Physics, Section B. 438, 1-2, p. 373-409 37 p.

    Research output: Contribution to journal › Article › Research › peer review

  279. Published

    Exact black-hole solution with self-interacting scalar field

    Bechmann, O. & Lechtenfeld, O., 1995, In: Classical and quantum gravity. 12, 6, p. 1473-1481 9 p., 013.

    Research output: Contribution to journal › Article › Research › peer review

  280. Published

    On the BRST cohomology of N=2 strings

    Lechtenfeld, O., 1995, Int. Conference "Strings '95". World Scientific, p. 309-310

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  281. Published

    Twisting and BRST cohomology of the N=2 string

    Lechtenfeld, O. & Ketov, S. V., 1995, 20th Yamada International Colloquium On Group Theoretical Methods In Physics. World Scientific, p. 272-277

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  282. Published

    Twisting the N=2 string

    Ketov, S. V., Lechtenfeld, O. & Parkes, A. J., 1995, In: Physical Review D. 51, 6, p. 2872-2890 19 p.

    Research output: Contribution to journal › Article › Research › peer review

  283. 1994

  284. Published

    From N=2 fermionic strings to superstrings?

    Lechtenfeld, O., 1994, 28th International Symposium on Particle Theory.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  285. Published

    From N=2 fermionic string to superstrings?

    Lechtenfeld, O., 1994, 28th Int. Ahrenshoop Symp. on Elem. Particle Theory. p. 16-28

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  286. 1993

  287. Published

    Collective field theory for D=0 matrix models

    Lechtenfeld, O., 1993, 27th Int. Ahrenshoop Symp. on Elem. Particle Theory. p. 32-44

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  288. Published

    Collective field theory for D = O matrix models

    Lechtenfeld, O., 1993, 27th International Ahrenshoop Symposium on Particle Theory.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  289. 1992

  290. External

    Dilaton gravity and no-hair theorem in two dimensions

    Lechtenfeld, O. & Nappi, C., 20 Aug 1992, In: Physics Letters B. 288, 1-2, p. 72-76 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  291. External

    Eigenvalue tunneling in matrix models

    Lechtenfeld, O., 20 Apr 1992, In: International Journal of Modern Physics A. 07, 10, p. 2335-2354

    Research output: Contribution to journal › Article › Research › peer review

  292. Published

    Semiclassical approach to finite N matrix models

    Lechtenfeld, O., 1992, In: Int.J.Mod.Phys.A.

    Research output: Contribution to journal › Article › Research › peer review

  293. 1991

  294. External

    Phase diagram and orthogonal polynomials in multiple-well matrix models

    Lechtenfeld, O., Ray, R. & Ray, A., 20 Oct 1991, In: International Journal of Modern Physics A. 06, 25, p. 4491-4515

    Research output: Contribution to journal › Article › Research › peer review

  295. Published

    Chaos in matrix models?

    Lechtenfeld, O., 1991, Quarks, Symmetries and Strings: a Symposium in Honor of Bunji Sakita's 60th Birthday.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  296. 1990

  297. External

    Baryon number violation at high temperature in the standard model

    Dine, M., Lechtenfeld, O., Sakita, B., Fischler, W. & Polchinski, J., 1 Oct 1990, In: Nuclear Physics, Section B. 342, 2, p. 381-408 28 p.

    Research output: Contribution to journal › Article › Research › peer review

  298. External

    Factorization and modular invariance of multi-loop superstring amplitudes in the unitary gauge

    Lechtenfeld, O., 9 Jul 1990, In: Nuclear Physics, Section B. 338, 2, p. 403-414 12 p.

    Research output: Contribution to journal › Article › Research › peer review

  299. External

    On covariant multi-loop superstring amplitudes

    Lechtenfeld, O. & Parkes, A., 26 Feb 1990, In: Nuclear Physics, Section B. 332, 1, p. 39-82 44 p.

    Research output: Contribution to journal › Article › Research › peer review

  300. External

    Chaos in matrix models? A Symposium in Honor of Bunji Sakita’s 60th Birthday

    Lechtenfeld, O., 1990, p. 149.

    Research output: Contribution to conference › Paper › Research › peer review

  301. External

    High energy versus high temperature - a Minkowskian point of view of baryon number violation in the Standard Model

    Lechtenfeld, O., 1990, High energy versus high temperature : a Minkowskian point of view of baryon number violation in the Standard Model. World Scientific, p. 139-160

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  302. Published

    High-energy versus high temperature: Minkowskian point of view of baryon number violation in the standard model

    Lechtenfeld, O., 1990, High-energy versus high temperature: Minkowskian point of view of baryon number violation in the Standard Model.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research

  303. 1989

  304. External

    Superconformal ghost correlations on Riemann surfaces

    Lechtenfeld, O., 30 Nov 1989, In: Physics Letters B. 232, 2, p. 193-198 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  305. External

    On non-renormalization theorems for four-dimensional superstrings

    Lechtenfeld, O. & Lerche, W., 31 Aug 1989, In: Physics Letters B. 227, 3-4, p. 373-380 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  306. External

    On the finiteness of the superstring

    Lechtenfeld, O., 7 Aug 1989, In: Nuclear Physics, Section B. 322, 1, p. 82-106 25 p.

    Research output: Contribution to journal › Article › Research › peer review

  307. 1988

  308. External

    Off-shell conformal methods for the superstring

    Lechtenfeld, O. & Samuel, S., 5 Dec 1988, In: Nuclear Physics, Section B. 310, 2, p. 254-290 37 p.

    Research output: Contribution to journal › Article › Research › peer review

  309. External

    Three-loop vanishing of the superstring cosmological constant

    Lechtenfeld, O., 7 Nov 1988, In: Nuclear Physics, Section B. 309, 2, p. 361-378 18 p.

    Research output: Contribution to journal › Article › Research › peer review

  310. External

    Gauge-invariant modification of Witten's open superstring

    Lechtenfeld, O. & Samuel, S., 3 Nov 1988, In: Physics Letters B. 213, 4, p. 431-438 8 p.

    Research output: Contribution to journal › Article › Research › peer review

  311. External

    Covariant off-shell string amplitudes with auxiliary fields

    Lechtenfeld, O. & Samuel, S., 17 Oct 1988, In: Nuclear Physics, Section B. 308, 2-3, p. 361-378 18 p.

    Research output: Contribution to journal › Article › Research › peer review

  312. External

    Covariant string amplitudes on exotic topologies to one loop

    Alan Kostelecký, V., Lechtenfeld, O. & Samuel, S., 29 Feb 1988, In: Nuclear Physics, Section B. 298, 1, p. 133-177 45 p.

    Research output: Contribution to journal › Article › Research › peer review

  313. External

    On the vanishing of the genus two superstring vacuum amplitude

    Lechtenfeld, O. & Parkes, A., 25 Feb 1988, In: Physics Letters B. 202, 1, p. 75-80 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  314. 1987

  315. External

    The six-fermion amplitude in the superstring

    Kostelecky, V. A., Lechtenfeld, O., Samuel, S., Verstegen, D., Watamura, S. & Sahdev, D., 15 Jan 1987, In: Physics Letters B. 183, 3-4, p. 299-303 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  316. External

    Conformal techniques, bosonization and tree-level string amplitudes

    Alan Kostelecký, V., Lechtenfeld, O., Lerche, W., Samuel, S. & Watamura, S., 1987, In: Nuclear Physics, Section B. 288, C, p. 173-232 60 p.

    Research output: Contribution to journal › Article › Research › peer review

  317. External

    Lorentzian algebra for the superstring

    Kostelecký, V. A. & Lechtenfeld, O., 1987, In: Physical review letters. 59, 2, p. 169-172 4 p.

    Research output: Contribution to journal › Article › Research › peer review

  318. 1986

  319. External

    A four-point amplitude for the o(16)×o(16) heterotic string

    Alan Kostelecký, V., Lechtenfeld, O., Lerche, W., Samuel, S. & Watamura, S., 25 Dec 1986, In: Physics Letters B. 182, 3-4, p. 331-336 6 p.

    Research output: Contribution to journal › Article › Research › peer review

  320. External

    Stochastic variables in ten dimensions?

    Lechtenfeld, O., 22 Sept 1986, In: Nuclear Physics, Section B. 274, 3-4, p. 633-652 20 p.

    Research output: Contribution to journal › Article › Research › peer review

  321. 1985

  322. External

    Dirac equations for generalised Yang-Mills systems

    Lechtenfeld, O., Nahm, W. & Tchrakian, D. H., 7 Nov 1985, In: Physics Letters B. 162, 1-3, p. 143-147 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  323. External

    Ghost-free quantisation of non-abelian gauge theories via the Nicolai transformation of their supersymmetric extensions

    Dietz, K. & Lechtenfeld, O., 23 Sept 1985, In: Nuclear Physics, Section B. 259, 2-3, p. 397-411 15 p.

    Research output: Contribution to journal › Article › Research › peer review

  324. External

    Nicolai maps and stochastic observables from a coupling constant flow

    Dietz, K. & Lechtenfeld, O., 1985, In: Nuclear Physics, Section B. 255, C, p. 149-173 25 p.

    Research output: Contribution to journal › Article › Research › peer review

  325. 1984

  326. External

    Stochastic variables in N = 1 supersymmetric Yang-Mills theory

    Lechtenfeld, O., 13 Dec 1984, In: Physics Letters B. 149, 1-3, p. 147-151 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  327. External

    On the stochastic structure of globally supersymmetric field theories

    Flume, R. & Lechtenfeld, O., 2 Feb 1984, In: Physics Letters B. 135, 1-3, p. 91-95 5 p.

    Research output: Contribution to journal › Article › Research › peer review

  328. Published

    CONSTRUCTION OF THE NICOLAI MAPPING IN SUPERSYMMETRIC FIELD THEORIES

    Lechtenfeld, O., 1984

    Research output: Thesis › Doctoral thesis

  329. External

    Konstruktion der Nicolai-Abbildung in supersymmetrischen Feldtheorien

    Lechtenfeld, O., 1984

    Research output: Thesis › Doctoral thesis

  330. 1982

  331. External

    Optimised mean fields for atoms. II. Numerical studies

    Dietz, K., Lechtenfeld, O. & Weymans, G., 1982, In: Journal of Physics B: Atomic and Molecular Physics. 15, 23, p. 4315-4330 16 p., 014.

    Research output: Contribution to journal › Article › Research › peer review

  332. External

    Optimised mean fields for atoms. I. Mean-field methods for the description of N-fermion systems

    Dietz, K., Lechtenfeld, O. & Weymans, G., 1982, In: Journal of Physics B: Atomic and Molecular Physics. 15, 23, p. 4301-4314 14 p., 013.

    Research output: Contribution to journal › Article › Research › peer review

  333. 1980

  334. External

    Finite nonabelian subgroups of SU(n) with analytic expressions for the irreducible representations and the Clebsch–Gordan coefficients

    Abresch, U., Bovier, A., Lechtenfeld, O., Lüling, M., Rittenberg, V. & Weymans, G., 1 Jan 1980, In: Journal of mathematical physics. 21, 10, p. 2481

    Research output: Contribution to journal › Article › Research › peer review