arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.03090gr-qc
收藏

具有反对称张量背景的AdS带电黑洞的热效应、拓扑效应与散射效应

Thermal, topological, and scattering effects of an AdS charged black hole with an antisymmetric tensor background

H. Chen, M. Y. Zhang, A. A. Araújo Filho, F. Hosseinifar, H. Hassanabadi

AI总结:

本文研究Kalb–Ramond场背景下AdS带电黑洞的阴影、散射与热力学拓扑,发现洛伦兹破缺参数显著影响吸收截面,且其拓扑分类与RN-AdS黑洞一致。

摘要:

在本研究中,我们考察了一个在Kalb–Ramond场背景影响下、具有宇宙学常数的球对称带电黑洞。我们计算了光子球半径和阴影半径,并利用来自事件视界望远镜(EHT)的观测数据验证了我们的发现,其中特别强调了人马座A*的阴影图像。此外,我们研究了灰体系数、发射率和部分吸收截面。结果表明,洛伦兹破缺参数\(\ar{l}\)对吸收截面具有重要影响。我们的分析还包括对拓扑荷、随温度变化的拓扑以及广义自由能的考察。特别地,我们将具有反对称张量背景的AdS带电黑洞视为热力学空间中的拓扑缺陷,于是该系统具有与带电RN-AdS黑洞相同的拓扑分类。

英文摘要:

In this study, we explore a spherically symmetric charged black hole with a cosmological constant under the influence of a Kalb--Ramond field background. We compute the photon sphere and shadow radii, validating our findings using observational data from the Event Horizon Telescope (EHT), with a particular emphasis on the shadow images of Sagittarius $A^{*}$. Furthermore, we investigate the \textit{greybody} factors, emission rate, and partial absorption cross section. It is shown that the Lorentz-violating parameter \(\bar{l}\) has an important effect on the absorption cross section. Our analysis also includes an examination of the topological charge, temperature-dependent topology, and generalized free energy. In particular, we regard the AdS charged black hole with an antisymmetric tensor background as a topological defect in the thermodynamic space, then the system has the same topological classification to the charged RN-AdS black hole.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑