Symmetries of perturbed conformal field theories

Fredenhagen, Stefan; Gaberdiel, M. R.; Keller, Christoph A.

doi:10.1088/1751-8113/40/45/012

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Symmetries of perturbed conformal field theories

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Fredenhagen, Stefan
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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jpa7_45_012.pdf
(出版社版), 315KB

0707.2511v1.pdf
(プレプリント), 325KB

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引用

Fredenhagen, S., Gaberdiel, M. R., & Keller, C. A. (2007). Symmetries of perturbed conformal field theories. Journal of Physics A, 40(45), 13685-13709. doi:10.1088/1751-8113/40/45/012.

引用: https://hdl.handle.net/11858/00-001M-0000-0013-4778-9

要旨

The symmetries of perturbed conformal field theories are analysed. We explain which generators of the chiral algebras of a bulk theory survive a perturbation by an exactly marginal bulk field. We also study the behaviour of D-branes under current-current bulk deformations. We find that the branes always continue to preserve as much symmetry as they possibly can, i.e. as much as is preserved in the bulk. We illustrate these findings with several examples, including permutation branes in WZW models and B-type D-branes in Gepner models.