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Related papers: Non-extensive Entropy and Holographic Thermodynami…

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In this paper, we delve into the thermodynamic topology of AdS Reissner-Nordstr$\ddot{o}$m (R-N) black holes by employing nonextensive entropy frameworks, specifically R$\acute{e}$nyi (with nonextensive parameter $\lambda$) and…

High Energy Physics - Theory · Physics 2025-12-25 Saeed Noori Gashti

This paper studies the thermodynamic topology through the bulk-boundary and restricted phase space (RPS) frameworks. In bulk-boundary framework, we observe two topological charges $(\omega = +1, -1)$ concerning the non-extensive Barrow…

High Energy Physics - Theory · Physics 2025-12-24 Saeed Noori Gashti , Behnam Pourhassan , Izzet Sakalli

In this paper, We conducted an in-depth investigation into the thermodynamic topology of Einstein-Gauss-Bonnet black holes within the framework of Conformal Field Theory (CFT), considering the implications of non-extensive entropy…

General Relativity and Quantum Cosmology · Physics 2025-04-30 Mohammad Ali S. Afshar , Mohammad Reza Alipour , Saeed Noori Gashti , Jafar Sadeghi

In this article, we investigate the thermodynamic topology of some black holes, namely AdS Reissner Nordstrom (R-N), AdS Einstein-Gauss-Bonnet (EGB), and AdS Einstein-power-Yang-Mills (EPYM), from different frameworks: bulk-boundary (BB)…

High Energy Physics - Theory · Physics 2025-12-29 Jafar Sadeghi , Mohmmad Ali S. Afshar , Saeed Noori Gashti , Mohammad Reza Alipour

In this article, we investigate the bulk-boundary and restricted phase space (RPS) thermodynamics of Rissner-Nordstr\"om (R-N) AdS and 6-dimensional charged Gauss-Bonnet AdS black holes. Also, we examine the topological characteristics of…

General Relativity and Quantum Cosmology · Physics 2024-06-05 Jafar Sadeghi , Mohammad Reza Alipour , Saeed Noori Gashti , Mohammad Ali S. Afshar

We explore the thermodynamics and geothermodynamics of black holes with Barrow entropy in a brane-world scenario, where the horizon geometry of the black hole is regarded as a fractal structure. Our analysis reveals the behavior of heat…

General Relativity and Quantum Cosmology · Physics 2026-04-02 Usman Zafar , Abdul Jawad , Kazuharu Bamba , Mohammad Ali S. Afshar , Mohammad Reza Alipour , Saeed Noori Gashti , Jafar Sadeghi

We investigate how deviations from the Bekenstein-Hawking entropy modify black-hole spacetimes through the recently proposed entropy-geometry correspondence. For four representative modified entropies, namely Barrow, R\'enyi, Kaniadakis,…

General Relativity and Quantum Cosmology · Physics 2026-03-16 Ankit Anand , Kimet Jusufi , Spyros Basilakos , Emmanuel N. Saridakis

We investigate the thermodynamics of asymptotically flat black holes in four-dimensional Einstein-Gauss-Bonnet (4D-EGB) gravity using R\'enyi entropy as a non-extensive generalization of the Bekenstein-Hawking entropy. The resulting…

High Energy Physics - Theory · Physics 2025-09-11 Amijit Bhattacharjee , Prabwal Phukon

We study the Restricted Phase Space Thermodynamics (RPST) for the AdS dyonic black hole carrying the central charge $C$ and the chemical potential $\mu$, neglecting the pressure and conjugate volume along with comparison of different…

High Energy Physics - Theory · Physics 2024-11-12 Abhishek Baruah , Prabwal Phukon

We study the issue of black hole entropy in the topologically massive gravity. Assuming that the presence of gravitational Chern-Simons term with the coupling $1/\mu$ does modify the horizon radius $\tilde{r}_+$, we propose…

High Energy Physics - Theory · Physics 2008-07-24 Yun Soo Myung , Hyung Won Lee , Yong-Wan Kim

We explore the microstructure of asymptotically flat charged black holes through the lens of nonextensive R\'enyi statistics. A modified form of the R\'enyi entropy is proposed to incorporate compressibility effects, and…

High Energy Physics - Theory · Physics 2025-08-12 F. Barzi , H. El Moumni , K. Masmar

We present a systematic investigation of the thermodynamic topology for a broad class of asymptotically charged Anti-de Sitter (AdS) black holes in Einstein-Maxwell-Dilaton (EMD) theories, examining how scalar coupling parameters and…

High Energy Physics - Theory · Physics 2025-09-09 H. Babaei-Aghbolagh , Habib Esmaili , Song He , Hosein Mohammadzadeh

This study explores the interaction between non-extensive entropic FLRW cosmology and the power-law inflationary model, with a focus on the overlap between the scalar spectral index `$n_s$' and the tensor-to-scalar ratio `$r$'. Based on a…

General Relativity and Quantum Cosmology · Physics 2024-09-26 A. Khodam-Mohammadi

In this paper, we investigate the topological charge and the conditions for the existence of the photon sphere (PS) in Kiselev-AdS black holes within \(f(R, T)\) gravity. We employ two different methods based on Duan's topological current…

General Relativity and Quantum Cosmology · Physics 2025-02-11 Saeed Noori Gashti , Mohammad Ali S. Afshar , Mohammad Reza Alipour , Yassine Sekhmani , Jafar Sadeghi , Javlon Rayimbaev

The topology of black hole thermodynamics is a fascinating area of study that explores the connections between thermodynamic properties and topological features of black holes. We successfully derive the field equations for…

General Relativity and Quantum Cosmology · Physics 2025-02-25 Yassine Sekhmani , Saeed Noori Gashti , Mohammad Ali S. Afshar , Mohammad Reza Alipour , Jafar Sadeghi , Behnam Pourhassan , Javlon Rayimbaev

In the present study, we investigate the topological properties of black holes in terms of R\'{e}nyi statistics as an extension of the Gibbs-Boltzmann (GB) statistics, aiming to characterize the non-Boltzmannian thermodynamic topology of…

General Relativity and Quantum Cosmology · Physics 2024-07-30 Meng-Yao Zhang , Hao Chen , Hassan Hassanabadi , Zheng-Wen Long , Hui Yang

Taking the nonextensive Tsallis and R\'enyi entropies into account, we explore thermodynamic properties and phase transitions of the Kerr-Newman black holes (KNBH) in the microcanonical and canonical ensembles. We also compare our results…

High Energy Physics - Theory · Physics 2025-03-25 S. Ghaffari , G. G. Luciano , A. Sheykhi

We explore a Reissner-Nordstr\"{o}m Anti-de Sitter (RN-AdS) black hole with a cloud of string and quintessence to study thermodynamics and thermodynamic topology in the presence of Barrow entropy, which is currently being used widely as the…

High Energy Physics - Theory · Physics 2025-04-09 Usman Zafar , Kazuharu Bamba , Tabinda Rasheed , Krishnakanta Bhattacharya

We investigate the thermodynamic properties of charged anti-de Sitter black holes surrounded by a cloud of strings in bumblebee gravity. In this framework, the cloud-of-strings parameter $\alpha$ and the Lorentz-violating parameter $\ell$…

General Relativity and Quantum Cosmology · Physics 2026-03-20 Faizuddin Ahmed , Edilberto O. Silva

Recently, Barrow proposed an extension of the Bekenstein-Hawking black hole entropy to include the effects of fractal geometry through a parameter $\Delta$. Since then, several interesting issues related to this extended entropy have been…

High Energy Physics - Theory · Physics 2026-03-11 Everton M. C. Abreu , Henrique Boschi-Filho , Rafael A. Costa-Silva
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