Jan 17 – 19, 2024
Porto - Portugal
Europe/Lisbon timezone

Hairy black holes, scalar charges and extended thermodynamics

Not scheduled
7m
Porto - Portugal

Porto - Portugal

Faculdade de Ciências da Universidade do Porto Rua do Campo Alegre Porto - Porto - Portugal

Speaker

Romina Ballesteros (IFT-UAM/CSIC)

Description

We explore the use of the recently defined scalar charge which satisfies a Gauss law in stationary spacetimes, in the context of theories with a scalar potential. We find new conditions that this potential has to satisfy in order to allow for static, asymptotically-flat black-hole solutions with regular horizons and non-trivial scalar field. These conditions are equivalent to some of the known ``no-hair'' theorems (such as Bekenstein's). We study the extended thermodynamics of these systems, deriving a first law and a Smarr formula. As an example, we study the Anabalón-Oliva hairy black hole.

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