Path-Integral Quantization of the (2,2) String

Details Path-Integral Quantization of the (2,2) String Path-Integral Quantization of the (2,2) String

1996-12-21

arxiv.org/abs/hep-th/9612218v2

Int.J.Mod.Phys. A12 (1997) 4933-4972

Physics

High Energy Physics

High Energy Physics - Theory

36 pages, LaTeX; published version (typos & eq.(7.12) corrected)

Scientific paper

10.1142/S0217751X97002632

A complete treatment of the (2,2) NSR string in flat (2+2) dimensional space-time is given, from the formal path integral over N=2 super Riemann surfaces to the computational recipe for amplitudes at any loop or gauge instanton number. We perform in detail the superconformal gauge fixing, discuss the spectral flow, and analyze the supermoduli space with emphasis on the gauge moduli. Background gauge field configurations in all instanton sectors are constructed. We develop chiral bosonization on punctured higher-genus surfaces in the presence of gauge moduli and instantons. The BRST cohomology is recapitulated, with a new space-time interpretation for picture-changing. We point out two ways of combining left- and right-movers, which lead to different three-point functions.

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