Coexistent physics and microstructure of the regular Bardeen black hole in anti-de Sitter spacetime

Rizwan, C. L. Ahmed; Kumara, A. Naveena; Hegde, Kartheek; Vaid, Deepak

doi:10.1016/j.aop.2020.168320

Cited by 15 publications

(6 citation statements)

References 35 publications

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“…In particular, the critical phenomena are observed for the normalized curvature scalar reflecting a universal property of the Ruppeiner geometry. Such study has also been extended to other black hole systems and more interesting results were obtained [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 91%

The microstructure and Ruppeiner geometry of charged anti-de Sitter black holes in Gauss–Bonnet gravity: from the critical point to the triple point

Wei¹,

Liu²

2022

Commun. Theor. Phys.

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Ruppeiner geometry has been successfully applied in the study of the black hole microstructure by combining with the small-large black hole phase transition, and the potential interactions among the molecular-like constituent degrees of freedom are uncovered. In this paper, we will extend the study to the triple point, where three black hole phases coexist acting as a typical feature of black hole systems quite different from the small-large black hole phase transition. For the six-dimensional charged Gauss-Bonnet anti-de Sitter black hole, we thoroughly investigate the swallow tail behaviors of the Gibbs free energy and the equal area laws. After obtaining the black hole triple point in a complete parameter space, we exhibit its phase structures both in the pressure-temperature and temperature-horizon radius diagrams. Quite different from the liquid-vapor phase transition, a double peak behavior is present in the temperature-horizon radius phase diagram. Then we construct the Ruppeiner geometry and calculate the corresponding normalized curvature scalar. Near the triple point, we observe multiple negatively divergent behaviors. Positive curvature scalar is observed for the small black hole with high temperature, which indicates that the repulsive interaction dominates among the microstructure. Furthermore, we consider the variation of the curvature scalar along the coexisting intermediate and large black hole curves. Combining with the observation for different fluids, the result suggests that this black hole system behaves more like the argon or methane. Our study provides a first and preliminary step towards understanding black hole microstructure near the triple point, as well as uncovering the particular properties of the Gauss-Bonnet gravity.

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Section: Introductionmentioning

confidence: 91%

The microstructure and Ruppeiner geometry of charged anti-de Sitter black holes in Gauss–Bonnet gravity: from the critical point to the triple point

Wei¹,

Liu²

2022

Commun. Theor. Phys.

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“…On the other hand, the explored Bardeen regular black hole solution in GR coupled with nonlinear electrodynamics has the right limiting cases and better describes astrophysical scenarios compared to the regular black solutions in the Born-Infield gravity theory. For this reason, in this work, we consider the special extension to the nonlinear Electrodynamics and the corresponding regular black hole solution obtained in [135]…”

Section: Test Particle Motion Around Bardeen Bh In Anti-de Sitter Spacetimementioning

confidence: 99%

Regular Bardeen Black Holes in Anti-de Sitter Spacetime versus Kerr Black Holes through Particle Dynamics

et al. 2021

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In this work, test particle dynamics around a static regular Bardeen black hole (BH) in Anti-de Sitter spacetime has been studied. It has been shown for neutral test particles that parameters of a regular Bardeen black hole in Anti-de Sitter spacetime can mimic the rotation parameter of the Kerr metric up to the value a≈0.9 providing the same innermost stable circular orbit (ISCO) radius. We have also explored the dynamics of magnetized particles with a magnetic dipole moment around a magnetically charged regular Bardeen black hole in Anti-de Sitter spacetime. As a realistic astrophysical scenario of the study, we have treated neutron stars orbiting a supermassive black hole (SMBH), in particular, the magnetar PSR J1745-2900 orbiting Sgr A* with the parameter β=10.2, as magnetized test particles. The magnetized particles dynamics shows that the parameter β, negative values of cosmological constant and magnetic charge parameter of the central BH cause a decrease in the ISCO radius. We have compared the effects of the magnetic charge of the Bardeen BH with the spin of rotating Kerr BH and shown that magnetic charge parameter can mimic the spin in the range a/M≃(0,0.7896) when Λ=0 at the range of its values g/M≃(0,0.648).

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“…Also, in GTD of this black hole and investigated the adaptability of the curvature scalar of geothermodynamic methods with phase transition points of BH. The geometrical interpretation is a great deal for exploring the microstructure of BHs thermodynamic system [16,17,[21][22][23][24][25][26][27][28][29][30][31]. According to one thought, interactions in the system under the study of microscopic statistical features have been illustrated through thermodynamic amounts induced from these geometries [24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…The geometrical interpretation is a great deal for exploring the microstructure of BHs thermodynamic system [16,17,[21][22][23][24][25][26][27][28][29][30][31]. According to one thought, interactions in the system under the study of microscopic statistical features have been illustrated through thermodynamic amounts induced from these geometries [24][25][26][27][28][29][30][31][32]. Even though the geometrothermodynamics (GTD) methods for various BHs are studied, it remains unexplored in case of BH in dRGT massive gravity via barrow entropy.…”

Section: Introductionmentioning

confidence: 99%

Thermal analysis of black hole in de Rham–Gabadadze–Tolley massive gravity in barrow entropy framework

Yasir,

Xia,

Upadhyay

2024

Phys. Scr.

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This study examines a recently hypothesized black hole solution in de Rham--Gabadadze--Tolley massive gravity. Firstly, we consider the negative cosmological constant as a thermodynamic pressure. We extract the thermodynamical properties such as Hawking temperature, heat capacity and Gibbs free energy using the barrow entropy. We also obtain a new pressure associated to the perfect fluid dark matter and discuss the first-order van der Waals-like phase transition. This black hole's stability is investigated through specific heat and Gibbs free energy. \textcolor{blue}{Also, we analyze the thermodynamic curvatures behavior of black hole through geometry methods (Weinhold, Ruppeiner, Hendi-Panahiyah-Eslam-Momennia (HPEM), and geometrothermodynamics (GTD)).

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Coexistent physics and microstructure of the regular Bardeen black hole in anti-de Sitter spacetime

Cited by 15 publications

References 35 publications

The microstructure and Ruppeiner geometry of charged anti-de Sitter black holes in Gauss–Bonnet gravity: from the critical point to the triple point

The microstructure and Ruppeiner geometry of charged anti-de Sitter black holes in Gauss–Bonnet gravity: from the critical point to the triple point

Regular Bardeen Black Holes in Anti-de Sitter Spacetime versus Kerr Black Holes through Particle Dynamics

Thermal analysis of black hole in de Rham–Gabadadze–Tolley massive gravity in barrow entropy framework

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