Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity
The EGB is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in D>4 dimensions, and EGB gravity is topologically invariant in 4D. Several ways have been proposed for regularizing the D→4 limit of EGB for non-trivial gravit...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-02-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321323000184 |
| _version_ | 1797897274529939456 |
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| author | Arun Kumar Sushant G. Ghosh |
| author_facet | Arun Kumar Sushant G. Ghosh |
| author_sort | Arun Kumar |
| collection | DOAJ |
| description | The EGB is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in D>4 dimensions, and EGB gravity is topologically invariant in 4D. Several ways have been proposed for regularizing the D→4 limit of EGB for non-trivial gravitational dynamics in 4D. Motivated by the importance of AdS/CFT, we obtain an exact static spherically symmetric nonsingular black hole in 4D EGB gravity coupled to the nonlinear electrodynamics (NED) in an AdS spacetime. We interpret the negative cosmological constant Λ as the positive pressure, via P=−Λ/8π, of the system's thermodynamic properties of the nonsingular black hole with an AdS background. We find that for P<Pc, the black holes with CP>0 are stable to thermal fluctuations and unstable otherwise. We also analyzed the Gibbs free energy to find that the small globally unstable black holes undergo a phase transition to the large globally stable black holes. Further, we study the P−V criticality of the system and then calculate the critical exponents to find that our system behaves like Van der Walls fluid. |
| first_indexed | 2024-04-10T07:55:59Z |
| format | Article |
| id | doaj.art-09715ff35cf3441e95f1e8ca3cc14b16 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 |
| language | English |
| last_indexed | 2024-04-10T07:55:59Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-09715ff35cf3441e95f1e8ca3cc14b162023-02-23T04:30:05ZengElsevierNuclear Physics B0550-32132023-02-01987116089Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravityArun Kumar0Sushant G. Ghosh1Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, India; Department of Mathematical Sciences, University of Zululand, Private Bag X1001, Kwa-Dlangezwa 3886, South Africa; Corresponding author.Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, India; Astrophysics and Cosmology Research Unit, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South AfricaThe EGB is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in D>4 dimensions, and EGB gravity is topologically invariant in 4D. Several ways have been proposed for regularizing the D→4 limit of EGB for non-trivial gravitational dynamics in 4D. Motivated by the importance of AdS/CFT, we obtain an exact static spherically symmetric nonsingular black hole in 4D EGB gravity coupled to the nonlinear electrodynamics (NED) in an AdS spacetime. We interpret the negative cosmological constant Λ as the positive pressure, via P=−Λ/8π, of the system's thermodynamic properties of the nonsingular black hole with an AdS background. We find that for P<Pc, the black holes with CP>0 are stable to thermal fluctuations and unstable otherwise. We also analyzed the Gibbs free energy to find that the small globally unstable black holes undergo a phase transition to the large globally stable black holes. Further, we study the P−V criticality of the system and then calculate the critical exponents to find that our system behaves like Van der Walls fluid.http://www.sciencedirect.com/science/article/pii/S0550321323000184 |
| spellingShingle | Arun Kumar Sushant G. Ghosh Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity Nuclear Physics B |
| title | Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity |
| title_full | Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity |
| title_fullStr | Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity |
| title_full_unstemmed | Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity |
| title_short | Nonsingular black hole chemistry in 4D Einstein-Gauss-Bonnet gravity |
| title_sort | nonsingular black hole chemistry in 4d einstein gauss bonnet gravity |
| url | http://www.sciencedirect.com/science/article/pii/S0550321323000184 |
| work_keys_str_mv | AT arunkumar nonsingularblackholechemistryin4deinsteingaussbonnetgravity AT sushantgghosh nonsingularblackholechemistryin4deinsteingaussbonnetgravity |