Viable and Stable Compact Stellar Structures in f(Q,T)$f(\mathcal {Q},\mathcal {T})$ Theory

M. Z. Gul, M. Sharif, Adeeba Arooj
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Abstract

The main objective of this paper is to investigate the impact of gravity on the geometry of anisotropic compact stellar objects, where is non‐metricity and is the trace of the energy‐momentum tensor. In this perspective, the physically viable non‐singular solutions to examine the configuration of static spherically symmetric structures is used. A specific model of this theory to examine various physical quantities in the interior of the proposed compact stars (CSs) is considered. These quantities include fluid parameters, anisotropy, energy constraints, equation of state parameters, mass, compactness, and redshift. The Tolman–Oppenheimer–Volkoff equation is used to examine the equilibrium state of stellar models, while the stability of the proposed CSs is investigated through sound speed and adiabatic index methods. It is found that the proposed CSs are viable and stable in the context of this theory.
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f(Q,T)$f(\mathcal {Q},\mathcal {T})$ 理论中可行且稳定的紧凑恒星结构
本文的主要目的是研究引力对各向异性紧凑型恒星天体几何形状的影响。从这个角度出发,使用物理上可行的非奇异解来研究静态球对称结构的构型。该理论的一个特定模型被用来研究拟紧凑星(CS)内部的各种物理量。这些量包括流体参数、各向异性、能量约束、状态方程参数、质量、紧密度和红移。利用托尔曼-奥本海默-沃尔科夫方程研究了恒星模型的平衡态,同时通过声速和绝热指数方法研究了拟紧凑星的稳定性。研究发现,所提出的 CS 在该理论背景下是可行和稳定的。
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