Superstring Perturbation Theory and Ramond-Ramond Backgrounds

Details Superstring Perturbation Theory and Ramond-Ramond Backgrounds Superstring Perturbation Theory and Ramond-Ramond Backgrounds

1999-04-14

arxiv.org/abs/hep-th/9904104v2

Phys.Rev. D60 (1999) 106002

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, LaTeX, 4 figures, uses epsf, latexsym, hyperref packages Section on realization of supersymmetry algebra has been ex

Scientific paper

10.1103/PhysRevD.60.106002

We consider perturbative Type II superstring theory in the covariant NSR formalism in the presence of NSNS and RR backgrounds. A concrete example that we have in mind is the geometry of D3-branes which in the near-horizon region is AdS_5 x S_5, although our methods may be applied to other backgrounds as well. We show how conformal invariance of the string path integral is maintained order by order in the number of holes. This procedure makes uses of the Fischler-Susskind mechanism to build up the background geometry. A simple formal expression is given for a \sigma-model Lagrangian. This suggests a perturbative expansion in 1/g^2N and 1/N. As applications, we consider at leading order the mixing of RR and NSNS states, and the realization of the spacetime supersymmetry algebra.

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