Non-singular black hole by gravitational decoupling and some thermodynamic properties

TL;DR

This paper uses gravitational decoupling to generate new non-singular black hole solutions with de Sitter cores, analyzing their thermodynamic properties and highlighting the impact of anisotropic matter on regularity.

Contribution

It introduces a novel method to derive non-singular black hole solutions from seed spacetimes using gravitational decoupling, including thermodynamic analysis.

Findings

New non-singular black hole solutions with de Sitter cores

Anisotropic energy-momentum tensors can affect regularity

Solutions exhibit Schwarzschild behavior at infinity

Abstract

Gravitational decoupling allows to obtain new solutions of general relativity. In this paper, we obtain new solutions of the Einstein field equations which describe non-singular black holes. We consider Hayward and Bardeen regular black holes as seed spacetimes and apply gravitational decoupling to obtain a new non-singular solution. We show that anisotropic energy-momentum tensor can spoil the regularity condition in the centre of a black hole. We solve the Einstein field equation and obtain new solutions that possess a de Sitter core and have Schwarzschild behaviour in infinity. We also analyse the thermodynamic properties of the obtained solutions.