2D CFTs - Large Charge is not enough
| Autor: | Araujo, Thiago, Celikbas, Omar, Orlando, Domenico, Reffert, Susanne |
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| Rok vydání: | 2021 |
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| Druh dokumentu: | Working Paper |
| Popis: | In this note we study two-dimensional CFTs at large global charge. Since the large-charge sector decouples from the dynamics, it does not control the dynamics and an EFT construction that works in higher-dimensional theories fails. It is however possible to use large charge in a double-scaling limit when another controlling parameter is present. We find some general features of the spectrum of models that admit an NLSM description in a WKB approximation and use the large-charge sector of the solvable $SU(2)_k$ WZW model to argue the regimes of applicability of both the large-Q expansion and the double-scaling limit. Comment: 18 pages. Version accepted in Phys.Rev.D |
| Databáze: | arXiv |
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