Details
| Original language | English |
|---|---|
| Pages (from-to) | 2872-2890 |
| Number of pages | 19 |
| Journal | Physical Review D |
| Volume | 51 |
| Issue number | 6 |
| Publication status | Published - 1995 |
Abstract
The most general homogeneous monodromy conditions in N=2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1,1)openZ2. For classes which generate a discrete subgroup Γ, the corresponding target space backgrounds openC1,1/Γ include half spaces, complex orbifolds, and tori. We propose a generalization of the intercept formula to matrix-valued twists, but find massless physical states only for Γ=open1 (untwisted) and Γ=openZ2 (in the manner of Mathur and Mukhi), as well as for Γ being a parabolic element of U(1,1). In particular, the 16 openZ2-twisted sectors of the N=2 string are investigated, and the corresponding ground states are identified via bosonization and BRST cohomology. We find enough room for an extended multiplet of "spacetime" supersymmetry, with the number of supersymmetries being dependent on global "spacetime" topology. However, world-sheet locality for the chiral vertex operators does not permit interactions among all massless "spacetime" fermions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Physical Review D, Vol. 51, No. 6, 1995, p. 2872-2890.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Twisting the N=2 string
AU - Ketov, Sergei V.
AU - Lechtenfeld, Olaf
AU - Parkes, Andrew J.
N1 - Copyright: Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1995
Y1 - 1995
N2 - The most general homogeneous monodromy conditions in N=2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1,1)openZ2. For classes which generate a discrete subgroup Γ, the corresponding target space backgrounds openC1,1/Γ include half spaces, complex orbifolds, and tori. We propose a generalization of the intercept formula to matrix-valued twists, but find massless physical states only for Γ=open1 (untwisted) and Γ=openZ2 (in the manner of Mathur and Mukhi), as well as for Γ being a parabolic element of U(1,1). In particular, the 16 openZ2-twisted sectors of the N=2 string are investigated, and the corresponding ground states are identified via bosonization and BRST cohomology. We find enough room for an extended multiplet of "spacetime" supersymmetry, with the number of supersymmetries being dependent on global "spacetime" topology. However, world-sheet locality for the chiral vertex operators does not permit interactions among all massless "spacetime" fermions.
AB - The most general homogeneous monodromy conditions in N=2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1,1)openZ2. For classes which generate a discrete subgroup Γ, the corresponding target space backgrounds openC1,1/Γ include half spaces, complex orbifolds, and tori. We propose a generalization of the intercept formula to matrix-valued twists, but find massless physical states only for Γ=open1 (untwisted) and Γ=openZ2 (in the manner of Mathur and Mukhi), as well as for Γ being a parabolic element of U(1,1). In particular, the 16 openZ2-twisted sectors of the N=2 string are investigated, and the corresponding ground states are identified via bosonization and BRST cohomology. We find enough room for an extended multiplet of "spacetime" supersymmetry, with the number of supersymmetries being dependent on global "spacetime" topology. However, world-sheet locality for the chiral vertex operators does not permit interactions among all massless "spacetime" fermions.
UR - http://www.scopus.com/inward/record.url?scp=0001373665&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.51.2872
DO - 10.1103/PhysRevD.51.2872
M3 - Article
AN - SCOPUS:0001373665
VL - 51
SP - 2872
EP - 2890
JO - Physical Review D
JF - Physical Review D
SN - 0556-2821
IS - 6
ER -