Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1991-10-18
Mod.Phys.Lett. A7 (1992) 1091-1104
Physics
High Energy Physics
High Energy Physics - Theory
17 pages
Scientific paper
10.1142/S0217732392000963
Deformations of gauged WZW actions are constructed for any pair $(G,H)$ by taking different embeddings of the gauge group $H\subset G$ as it acts on the left and right of the group element $g$. This leads to models that are dual to each other, generalizing the axial/vector duality of the two dimensional black hole manifold. The classical equations are completely solved for any pair $(G,H)$ and in particular for the anti de Sitter string based on $SO(d- 1,2)/SO(d-1,1)$ for which the normal modes are determined. Duality is demonstrated for models that have the same set of normal modes. Concentrating on $SO(2,2)/SO(2,1)$, the metric and dilaton fields of the $d=3$ string as well as some of the dual generalizations are obtained. They have curvature singularities and represent new singular solutions of Einstein's general relativity in three dimensions.
Bars Itzhak
Sfetsos Konstadinos
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