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We investigate the propagation of scalar fields in the gravitational background of higher-dimensional, electrically charged, regular de Sitter black holes. Using an approximate analytical approach, we derive expressions for the greybody…

广义相对论与量子宇宙学 · 物理学 2025-04-18 Md Sabir Ali , A. Naveena Kumara , Kartheek Hegde , C. L. Ahmed Rizwan , Shreyas Punacha , K. M. Ajith

It's widely recognized that the free energy landscape captures the essentials of thermodynamic phase transitions. In this work, we extend the findings of [1] by incorporating the nonextensive nature of black hole entropy. Specifically, the…

高能物理 - 理论 · 物理学 2024-11-08 F. Barzi , H. El Moumni , K. Masmar

A new perspective toward thermodynamic phase space of Reisser-Nordstrom (RN) black holes in an anti-de-Sitter (AdS) spaces was recently proposed [Phys. Lett. B 768 (2017) 235], where the square of the electric charge $(Q^2)$ of black hole…

高能物理 - 理论 · 物理学 2019-03-06 Amin Dehyadegari , Bibhas Ranjan Majhi , Ahmad Sheykhi , Afshin Montakhab

To consider the inevitable cosmic magnetic effects instead of the unknown dark sector of matter/energy on the inflation phase of the expanding universe some authors have proposed several extended exotic Einstein-Maxwell gravities which are…

广义相对论与量子宇宙学 · 物理学 2025-02-07 Hossein Ghaffarnejad , Elham Ghasemi

Within the framework of extended black hole thermodynamics, where the cosmological constant acts as the thermodynamic pressure and its conjugate as the thermodynamic volume, we analyze the phase structure and thermodynamic geometry of the…

高能物理 - 理论 · 物理学 2025-01-22 Seyed Ali Hosseini Mansoori , Juan F. Pedraza , Morteza Rafiee

We study the thermodynamic behavior of static and spherically symmetric hairy black holes in massive gravity. In this case, the black hole is surrounded in a spherical cavity with a fixed temperature on the surface. It is observed that…

广义相对论与量子宇宙学 · 物理学 2015-06-23 Behrouz Mirza , Zeinab Sherkatghanad

Using geomterothermodynamics (GTD), we investigate the phase transition of black hole in a metric independent way. We show that for any black hole, curvature scalar (of equilibrium state space geometry) is singular at the point where…

广义相对论与量子宇宙学 · 物理学 2017-02-03 Rabin Banerjee , Bibhas Ranjan Majhi , Saurav Samanta

We consider the corrections due to quantum fluctuations of fields on charged black holes induced from the energy-momentum trace anomaly. Although the number of horizons stays unchanged and their positions receive only finite corrections,…

We present a class of charged black hole solutions in an ($n+2)$-dimensional massive gravity with a negative cosmological constant, and study thermodynamics and phase structure of the black hole solutions both in grand canonical ensemble…

高能物理 - 理论 · 物理学 2015-01-27 Rong-Gen Cai , Ya-Peng Hu , Qi-Yuan Pan , Yun-Long Zhang

Sign and magnitude of Ruppeiner's curvature $R_N$ is an empirical indicator of the respective nature and strength of microstructures of a thermodynamic system. For d-dimensional Schwarzschild black holes in AdS, $R_N$ at the Hawking-Page…

广义相对论与量子宇宙学 · 物理学 2021-12-08 Pavan Kumar Yerra , Chandrasekhar Bhamidipati

We continue to study the holographic QCD (hQCD) model, proposed in a previous paper, in an Einstein-Maxwell-Dilaton (EMD) system. In this paper we discuss some aspects of quark gluon plasma (QGP) in the hQCD model, such as drag force, jet…

高能物理 - 理论 · 物理学 2015-06-11 Rong-Gen Cai , Shankhadeep Chakrabortty , Song He , Li Li

In this paper, we study the thermodynamics of Schwarzschild-anti-de Sitter black holes within the framework of non-commutative geometry. By solving the Einstein's equations, we derive the corrected Schwarzschild-AdS black hole with…

广义相对论与量子宇宙学 · 物理学 2025-04-14 Rui-Bo Wang , Shi-Jie Ma , Lei You , Jian-Bo Deng , Xian-Ru Hu

Reissner-Nordstrom anti de Sitter (RN-AdS) black hole, characterized by electric charge and negative cosmological constant,exhibits a rich thermodynamics structure. In this paper, we consider the influence of quintessence, a hypothetical…

广义相对论与量子宇宙学 · 物理学 2025-02-04 BaoYu Tan

Universal relations and constants have important applications in understanding a physical theory. In this article, we explore this issue for Hawking-Page phase transitions in Schwarzschild anti-de Sitter black holes. We find a novel exact…

广义相对论与量子宇宙学 · 物理学 2020-11-10 Shao-Wen Wei , Yu-Xiao Liu , Robert B. Mann

We explore the modified thermodynamics of a Hayward-Anti de Sitter (H-AdS) black hole in atypical conditions, incorporating a string fluid, Hayward regularisation, and quantum entropy corrections. Our analysis reveals a first-order phase…

广义相对论与量子宇宙学 · 物理学 2025-10-07 Shyamalee Bora , Dhruba Jyoti Gogoi , Pralay Kumar Karmakar

We study the Hawking effect in terms of the geometric phase acquired by a two-level atom as a result of coupling to vacuum fluctuations outside a Schwarzschild black hole in a gedanken experiment. We treat the atom in interaction with a…

广义相对论与量子宇宙学 · 物理学 2012-09-26 Jiawei Hu , Hongwei Yu

We resolve the controversial issue of the geometric approach to the black hole thermodynamics. The geometric description of the equilibrium thermodynamics comes from Ruppeiner geometry based on a metric on the thermodynamic state space. For…

高能物理 - 理论 · 物理学 2008-11-26 Yun Soo Myung , Yong-Wan Kim , Young-Jai Park

In the AdS/CFT correspondence, a dynamical cosmological constant $\Lambda$ in the bulk corresponds to varying the number of colors $N$ in the boundary gauge theory with a chemical potential $\mu$ as its thermodynamic conjugate. In this…

高能物理 - 理论 · 物理学 2020-11-20 Sandip Mahish , Aritra Ghosh , Chandrasekhar Bhamidipati

This paper is devoted to analyzing the critical phenomenon and phase transition of quintessential Kerr-Newman-anti-de Sitter black hole in the framework of Maxwell equal-area law. For this purpose, we first derive thermodynamic quantities…

广义相对论与量子宇宙学 · 物理学 2020-10-08 M. Sharif , Qanitah Ama-Tul-Mughani

In this paper, the Hawking-Page phase transitions between the black holes and thermal anti-de Sitter (AdS) space are studied with the Gauss-Bonnet term in the extended phase space, in which the varying cosmological constant plays the role…

广义相对论与量子宇宙学 · 物理学 2020-04-22 Bing-Yu Su , Yuan-Yuan Wang , Nan Li
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