On scalar charges and black hole thermodynamics
| Autor: | Romina Ballesteros, Carmen Gómez-Fayrén, Tomás Ortín, Matteo Zatti |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-26 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1029-8479 61374172 |
| DOI: | 10.1007/JHEP05(2023)158 |
| Popis: | Abstract We revisit the first law of black hole thermodynamics in 4-dimensional theories containing scalar and Abelian vector fields coupled to gravity using Wald’s formalism and a new definition of scalar charge as an integral over a 2-surface which satisfies a Gauss law in the background of stationary black-hole spacetimes. We focus on ungauged supergravity-inspired theories with symmetric sigma models whose symmetries generate electric-magnetic dualities leaving invariant their equations of motion. Our manifestly duality-invariant form of the first law is compatible with the one obtained by of Gibbons, Kallosh and Kol. We also obtain the general expression for the scalar charges of a stationary black hole in terms of the other physical parameters of the solution and the position of the horizon, generalizing the expression obtained by Pacilio for dilaton black holes. |
| Databáze: | Directory of Open Access Journals |
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