期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP01(2011)015
关键词
AdS-CFT Correspondence; Sigma Models; Conformal Field Models in String Theory
资金
- UBACyT [X161]
- [PIP-CONICET/112-200801-00507]
We calculate some extremal and non-extremal four-point functions on the sphere of certain chiral primary operators for strings on AdS(3)xS(3)xT(4). The computation is done for small values of the spacetime cross-ratio where global SL(2) and SU(2) descendants may be neglected in the intermediate channel. Ignoring also current algebra descendants, we find that in the non-extremal case the integrated worldsheet correlators factorize into spacetime three-point functions, which is non-trivial due to the integration over the moduli space. We then restrict to the extremal case and compare our results with the four-point correlators recently computed in the dual boundary theory. We also discuss a particular non-extremal correlator involving two chiral and two anti-chiral operators.
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