Non-Critical Covariant Superstrings

Details Non-Critical Covariant Superstrings Non-Critical Covariant Superstrings

2005-07-18

arxiv.org/abs/hep-th/0507168v1

Physics

High Energy Physics

High Energy Physics - Theory

harvmac, amssym, 46 pp

Scientific paper

We construct a covariant description of non-critical superstrings in even dimensions. We construct explicitly supersymmetric hybrid type variables in a linear dilaton background, and study an underlying N=2 twisted superconformal algebra structure. We find similarities between non-critical superstrings in 2n+2 dimensions and critical superstrings compactified on CY_(4-n) manifolds. We study the spectrum of the non-critical strings, and in particular the Ramond-Ramond massless fields. We use the supersymmetric variables to construct the non-critical superstrings sigma-model action in curved target space backgrounds with coupling to the Ramond-Ramond fields. We consider as an example non-critical type IIA strings on AdS_2 background with Ramond-Ramond 2-form flux.

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