T-duality and spacetime supersymmetry

Details T-duality and spacetime supersymmetry T-duality and spacetime supersymmetry

1995-07-21

arxiv.org/abs/hep-th/9507112v2

Nucl.Phys. B457 (1995) 3-26

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, harvmac/ a few corrections and references added; to appear in Nuclear Physics B

Scientific paper

10.1016/0550-3213(95)00566-8

We analyze in detail the possible breaking of spacetime supersymmetry under T-duality transformations. We find that when appropiate world-sheet effects are taken into account apparent puzzles concerning supersymmetry in spacetime are solved. We study T-duality in general heterotic $\sigma$-models analyzing possible anomalies, and we find some modifications of Buscher's rules. We then work out a simple but representative example which contains most of the difficulties. We also consider the issue of supersymmetry versus duality for marginal deformations of WZW models and present a mechanism that restores supersymmetry dynamically in the effective theory.

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