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Aspects of WZW models at critical level
We consider non-compact WZW models at critical level (equal to the dual Coxeter number) as tensionless limits of gravitational backgrounds in string theory. Special emphasis is placed on the Euclidean black hole coset SL(2,R)_k/U(1) when k=2. In this limit gravity decouples in the form of a Liouvill...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2005
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1002/prop.200510198 http://cds.cern.ch/record/815758 |