Infinite-Dimensional Symmetries of Two-Dimensional Coset Models Coupled to Gravity
| Autor: | Perry, M. J., Lu, H., Pope, C. N. |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Nucl.Phys.B806:656-683,2009 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nuclphysb.2008.07.035 |
| Popis: | In an earlier paper we studied the infinite-dimensional symmetries of symmetric-space sigma models (SSMs) in a flat two-dimensional spacetime. Here, we extend our investigation to the case of two-dimensional SSMs coupled to gravity. These theories arise from the toroidal reduction of higher-dimensional gravity and supergravities to two dimensions. We construct explicit expressions for the symmetry transformations under the affine Kac-Moody extension $\hat G$ that arises when starting from a G/H coset model. We also construct further explicit symmetry transformations that correspond to the modes L_n of a Virasoro subalgebra with $n\ge -1$. Comment: 27 pages |
| Databáze: | arXiv |
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