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扩展引力退耦中类荷毛发黑洞的粒子动力学与热力学

Particle Dynamics and Thermodynamics of a Charged-Like Hairy Black Hole in Extended Gravitational Decoupling

M. Zeeshan Gul, Ahmad Al-Badawi, J. Andrade, Sadia Zahid

arXiv 2609.08304首次发表:更新:

发表机构

Tongji University; The University of Lahore; Khazar University; Jadara University; Al-Hussein Bin Talal University; Escuela Superior Politécnica de Chimborazo (ESPOCH)(同济大学; 拉合尔大学; 阿塞拜疆哈萨尔大学; 贾达拉大学; 侯赛因·本·塔拉勒大学; 奇姆博拉索高等理工学院)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本文研究扩展引力退耦所得毛发黑洞的粒子动力学与热力学,计算光子球、阴影、ISCO及热力学量,揭示其物理特性。

AI 中文摘要

本工作聚焦于分析一类特定分支的毛发黑洞解所关联的粒子动力学与热力学性质。这些解是通过对史瓦西解的种子解施加扩展几何形变引力退耦而获得的。所得几何满足主能量条件以及条件$Q^{2}=2\chi\ell M$。我们分析了该几何中有质量粒子和光子的运动,以及该解的热力学。特别地,对于无质量粒子,我们研究了有效势,并确定了光子球半径和黑洞阴影。对于有质量粒子,我们计算了圆轨道的比能和角动量、ISCO、吸积盘的辐射效率以及代表性粒子轨迹。最后,我们研究了该毛发黑洞几何的热力学性质,包括霍金温度、贝肯斯坦-霍金熵以及在固定$(Q,\ell)$系综中的热容。

英文摘要

This work focuses on the analysis of particle dynamics and the thermodynamic properties associated with a particular branch of hairy black hole solutions. These solutions are obtained by using extended geometric deformation gravitational decoupling on the seed solution of the Schwarzschild solution. This resulting geometry satisfies the dominant energy condition and the condition $Q^{2}=2χ\ell M$. We analyze the motion of massive particles and photons in this geometry and the thermodynamics of this solution. In particular, for massless particles, we study the effective potential and determine the radii of the photon sphere and the shadow of the black hole. For massive particles, we calculate the specific energy and angular momentum of circular orbits, the ISCO, the radiative efficiency of an accretion disk, and representative particle trajectories. Finally, we investigate the thermodynamic properties of this hairy black hole geometry, including the Hawking temperature, the Bekenstein-Hawking entropy, and the heat capacity in the fixed-$(Q,\ell)$ ensemble.

Comments15 pages, 10 figures

论文原文

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