Regular Article - Theoretical Physics
Late-time tails, entropy aspects, and stability of black holes with anisotropic fluids
Escola de Engenharia de Lorena, Universidade de São Paulo, Estrada Municipal do Campinho S/N, CEP 12602-810, Lorena, SP, Brazil
2 Universidade Federal da Fronteira Sul, Campus Chapecó, CEP 89802-112, Chapecó, SC, Brazil
3 Instituto de Física, Universidade Federal de Mato Grosso, CEP 78060-900, Cuiabá, Brazil
Accepted: 27 August 2020
Published online: 14 September 2020
In this work we consider black holes surrounded by anisotropic fluids in four dimensions. We first study the causal structure of these solutions showing some similarities and differences with Reissner–Nordström–de Sitter black holes. In addition, we consider scalar perturbations on this background geometry and compute the corresponding quasinormal modes. Moreover, we discuss the late-time behavior of the perturbations finding an interesting new feature, i.e., the presence of a subdominant power-law tail term. Likewise, we compute the Bekenstein entropy bound and the first semiclassical correction to the black hole entropy using the brick wall method, showing their universality. Finally, we also discuss the thermodynamical stability of the model.
© The Author(s) 2020
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