The Dual Faces of String Theory

Details The Dual Faces of String Theory The Dual Faces of String Theory

1993-09-18

arxiv.org/abs/hep-th/9309101v1

Physics

High Energy Physics

High Energy Physics - Theory

LateX file, 11pp., CERN-TH.7012/93

Scientific paper

Duality symmetries for strings moving in non-trivial spacetime backgrounds are analysed. It is shown that, for backgrounds generated from compact WZW and coset models, such duality symmetries are exact to all orders in string perturbation theory. A global treatment of duality symmetries is given, by associating them to the known symmetries of affine current algebras (affine-Weyl group and external automorphisms). It is argued that self-duality symmetries of WZW and coset models generate the duality symmetries of their moduli space. Some remarks are presented, concerning the survival of such symmetries in the non-compact case. The implications of duality symmetries for string dynamics in non-trivial/singular spacetimes are discussed. (Talk given at the "Strings 93" Conference at Berkeley, May 1993)

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