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

被引：1

作者：

Misyura, Maxim ^{[1
]}

Rincon, Angel ^{[2
]}

Vertogradov, Vitalii ^{[3
,4
]}

机构：

[1] St Petersburg State Univ, Dept High Energy & Elementary Particles Phys, Univ Emb 7-9, St Petersburg 199034, Russia

[2] Univ Alicante, Dept Fis Aplicada, Campus San Vicente Raspeig, E-03690 Alicante, Spain

[3] Herzen State Pedag Univ Russia, Phys Dept, 48 Moika Emb, St Petersburg 191186, Russia

[4] SAO RAS, SPb branch, 65 Pulkovskoe Rd, St Petersburg 196140, Russia

来源：

PHYSICS OF THE DARK UNIVERSE | 2024年 / 46卷

关键词：

Regular black holes; Gravitational decoupling; Thermodynamics; Einstein equations; GENERAL-RELATIVITY; SINGULARITIES;

D O I：

10.1016/j.dark.2024.101717

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Gravitational decoupling allows us 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 anew non-singular solution. We show that an 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.

引用

页数：15

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