Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Dual Faces of String Theory   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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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin