Details
| Original language | English |
|---|---|
| Pages (from-to) | 373-409 |
| Number of pages | 37 |
| Journal | Nuclear Physics, Section B |
| Volume | 438 |
| Issue number | 1-2 |
| Publication status | Published - 27 Mar 1995 |
Abstract
We investigate in detail the critical N = 2 fermionic string with and without a global Z2 twist. An analysis of BRST cohomology shows that twisted sectors contain massless 'spacetime' fermions which are non-local with respect to the standard massless boson. However, two distinct GSO projections exist, one (untwisted) retaining merely the usual boson and its spectral-flow partner, the other (twisted) yielding two fermions and one boson, on the massless level. The corresponding chiral BRST-invariant vertex operators are constructed in certain pictures, and their fusion and picture-changing are investigated, including the construction of inverse picture-changing operators. The N = 2 'spacetime supersymmetry' generators are null operators, since the twisted massless states fail to interact. The untwisted three- and four-point functions are recalculated at tree-level.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
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In: Nuclear Physics, Section B, Vol. 438, No. 1-2, 27.03.1995, p. 373-409.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The GSO projection, BRST cohomology and picture-changing in N = 2 string theory
AU - Bischoff, Jan
AU - Ketov, Sergei V.
AU - Lechtenfeld, Olaf
N1 - Funding Information: * Supported in part by the 'Deutsche Forschungsgemeinschaft'. 1 E-mail: bischoff@itp.uni-hannover.de 2 On leave of absence from High Current Electronics Institute of the Russian Academy of Sciences, Siberian Branch, Akademiehesky4 , Tomsk 634055, Russia. 3 E-mail: ketov@itp.uni-hannover.de 4 E-mail: lechtenf@itp.uni-hannover.de 5 See Refs. \[7,8\f]o r a review. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1995/3/27
Y1 - 1995/3/27
N2 - We investigate in detail the critical N = 2 fermionic string with and without a global Z2 twist. An analysis of BRST cohomology shows that twisted sectors contain massless 'spacetime' fermions which are non-local with respect to the standard massless boson. However, two distinct GSO projections exist, one (untwisted) retaining merely the usual boson and its spectral-flow partner, the other (twisted) yielding two fermions and one boson, on the massless level. The corresponding chiral BRST-invariant vertex operators are constructed in certain pictures, and their fusion and picture-changing are investigated, including the construction of inverse picture-changing operators. The N = 2 'spacetime supersymmetry' generators are null operators, since the twisted massless states fail to interact. The untwisted three- and four-point functions are recalculated at tree-level.
AB - We investigate in detail the critical N = 2 fermionic string with and without a global Z2 twist. An analysis of BRST cohomology shows that twisted sectors contain massless 'spacetime' fermions which are non-local with respect to the standard massless boson. However, two distinct GSO projections exist, one (untwisted) retaining merely the usual boson and its spectral-flow partner, the other (twisted) yielding two fermions and one boson, on the massless level. The corresponding chiral BRST-invariant vertex operators are constructed in certain pictures, and their fusion and picture-changing are investigated, including the construction of inverse picture-changing operators. The N = 2 'spacetime supersymmetry' generators are null operators, since the twisted massless states fail to interact. The untwisted three- and four-point functions are recalculated at tree-level.
UR - http://www.scopus.com/inward/record.url?scp=0001470549&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(94)00536-N
DO - 10.1016/0550-3213(94)00536-N
M3 - Article
AN - SCOPUS:0001470549
VL - 438
SP - 373
EP - 409
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
SN - 0550-3213
IS - 1-2
ER -