2020/03/01 by B. Cuadros-Melgar, R. D. B. Fontana, Jeferson de Oliveira
Mathematics · Physics and Astronomy · #Anisotropy #Black Holes and Theoretical Physics #Black hole (networking) #Black hole thermodynamics #Entropy (arrow of time) #Hawking radiation #Navier-Stokes equation solutions #Perturbation (astronomy) #Pulsars and Gravitational Waves Research #Scalar (mathematics) #Semiclassical physics #Work (physics) #gr-qc #hep-th
paper · pdf · doi:10.1140/epjc/s10052-020-8415-7
published as The European Physical Journal C volume 80, Article number: 848 (2020) · 23 pages, 4 figures
arxiv created 2020/03/01 · openalex created_date 2020/03/06 · openalex publication_date 2020/09/01 · arxiv updated 2020/11/20 · openalex updated_date 2026/08/05
Abstract 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.