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On Affine Lie Superalgebras, AdS3/CFT Correspondence And World-Sheets For World-Sheets

Oleg Andreev

hep-tharXiv:hep-th/9901118

Abstract

Space-time N=2 and N=4 superconformal algebras can be built using world-sheet free fields or, equivalently, free field representations of osp(1|2) and sl(2|1), respectively. A prescription for the calculation of space-time correlators is given. As applications we compute one and two-point correlation functions of Virasoro (superVirasoro) generators. We also present a possible scenario for taking into account of NS fivebranes in the framework of our construction for description of superstring on AdS3. It is nothing but a simplified version of Green's ``world-sheets for world-sheets''.

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