在f(T)重力下具有玻色-爱因斯坦暗物质密度分布的各向异性恒星的相对论模型

IF 2.9 3区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS Nuclear Physics B Pub Date : 2025-03-01 Epub Date: 2025-02-06 DOI:10.1016/j.nuclphysb.2025.116819
Samprity Das , Prabir Rudra , Surajit Chattopadhyay
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引用次数: 0

摘要

本文提出了f(T)远平行引力背景下受物理暗物质约束的各向异性致密恒星的新模型。该模型基于袋模型类型的状态方程(EoS)和玻色-爱因斯坦暗物质密度分布图。导出的解满足能量条件、因果关系条件以及稳定因子和绝热指数所要求的条件,表明它们具有良好的物理性能,代表了物理稳定的物质构型。我们还确定了表面的最大质量、表面红移和致密度参数。有趣的是,所有这些数字都在规定的范围内,支持我们建议的物理可行性。此外,通过改变模型参数k而得到的各种质量对应于五个紧凑的、真实的紧凑天体,包括LMC X-4、Her X-1、4U 1538-52、SAX j18084 -3658和Cen X-3。我们还举例说明了非旋转恒星的能量密度和转动惯量的径向对称分布。
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Relativistic model of an anisotropic star with Bose-Einstein dark matter density profile in f(T) gravity
This article presents a new model for anisotropic compact stars that are confined to physical dark matter in the background of f(T) teleparallel gravity. The model is based on the equation of state (EoS) of the bag model type and the Bose-Einstein dark matter density profile. The derived solutions meet the energy conditions, the causality conditions, and the required conditions on the stability factor and adiabatic index, indicating that they are physically well-behaved and represent the physical and stable matter configuration. We also determine the maximum mass, surface redshift, and compactness parameter at the surface. Interestingly, all of these numbers fall within the specified range, supporting the physical viability of our proposal. Additionally, the various masses that are derived for varying the model parameter k correspond to five compact, realistic compact objects, including LMC X-4, Her X-1, 4U 1538-52, SAX J1808.4-3658, and Cen X-3. We have also illustrated the radially symmetric profiles of energy density and the moment of inertia for non-rotating stars.
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来源期刊
Nuclear Physics B
Nuclear Physics B 物理-物理:粒子与场物理
CiteScore
5.50
自引率
7.10%
发文量
302
审稿时长
1 months
期刊介绍: Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.
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