On scalar charges and black hole thermodynamics
Feb 22, 2023
Published in:
- JHEP 05 (2023) 158
- Published: May 18, 2023
e-Print:
- 2302.11630 [hep-th]
Report number:
- IFT-UAM/CSIC-23-018
View in:
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Abstract: (Springer)
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.Note:
- Misprints corrected and a few comments and references added. Version to be published in JHEP
- Black Holes
- Global Symmetries
- Space-Time Symmetries
- Black Holes in String Theory
- charge: scalar
- black hole: thermodynamics
- field theory: vector
- space-time: black hole
- abelian
- gravitation
References(54)
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