Near-Horizon Thermodynamics of Hairy Black Holes from Gravitational Decoupling

• Autor(a) principal: Cavalcanti, Rogerio Teixeira [UNESP]
• Data de Publicação: 2022
• Outros Autores: Alves, Kelvin dos Santos [UNESP], Silva, Julio Marny Hoff da [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.3390/universe8070363; http://hdl.handle.net/11449/240404
• topic: black hole thermodynamics; generalized uncertainty principle; gravitational decoupling; hairy black holes; Hawking radiation; remanent black hole; tunelling method

The horizon structure and thermodynamics of hairy spherically symmetric black holes generated by the gravitational decoupling method are carefully investigated. The temperature and heat capacity of the black hole is determined, as well as how the hairy parameters affect the thermodynamics. This allows for an analysis of thermal stability and the possible existence of a remanent black hole. We also calculate the Hawking radiation corrected by the generalized uncertainty principle. We consider the emission of fermions and apply the tunneling method to the generalized Dirac equation. This shows that, despite the horizon location being the same as the Schwarzschild one for a suitable choice of parameters, the physical phenomena that occur near the horizon of both black holes are qualitatively different.