String Theory on AdS3: Some Open Questions

Abstract

String theory on curved backgrounds has received much attention on account of both its own interest, and of its relation with gauge theories. Despite the progress made in various directions, several quite elementary questions remain unanswered, in particular in the very simple case of three-dimensional anti-de Sitter space. I will very briefly review these problems, discuss in some detail the important issue of constructing a consistent spectrum for a string propagating on ADS3 plus torsion background, and comment on potential solutions.

18 pages, latex. To appear in the proceedings of the TMR European program meeting "Quantum aspects of gauge theories, supersymmetry and unification", Paris, France, 1--7 September, 1999; v2: comments and references added

References in corpus (2)

• A Note on Classical String Dynamics on AdS_3
• Integration of the SL(2,R)/U(1) Gauged WZNW Model with Periodic Boundary Conditions

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