在带电 f(R,T) 理论中扩展各向异性内部,承认消失复杂性

IF 5.6 3区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Tayyab Naseer, M. Sharif
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引用次数: 0

摘要

本文扩展了在f(R,T)$f(\mathbf {R},\mathbf {T})$引力背景下带电自引力结构的复杂因子定义。为此,我们计算了对应于静态球体的修正爱因斯坦-麦克斯韦场方程和内部电荷的质量函数。然后采用 Reissner-Nordström 外部时空,并在次表面将其与球形内部相匹配,以确定交界条件。曲率张量也被正交分解,从而得到多个标量函数。只有 YTF$\mathbf {Y}_{TF}$ 包含了所有需要的参数,并满足所提出的标准,才是所考虑的设置的复杂性因素。此外,我们还选择了一些约束条件来最小化场方程中的自由度。为此,我们采用了无复杂性约束,并根据物质部门的不同采用了四种附加条件,从而产生了不同的模型。通过改变模型参数ξ3$\xi _3$的值,还通过标准模型R+2ξ3T$\mathbf {R}+2\xi _3mathbf {T}$分析了所建立模型在有电荷和无电荷情况下的稳定性。结论是,在与 Pr=0$\mathrm{P}_r=0$ 相对应的紧凑模型中,电荷的存在、多向性和线性状态方程使它们在特定的ξ3$\xi _3$值下是稳定的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Extending Anisotropic Interiors admitting Vanishing Complexity in Charged f (R, T) Theory

This paper extends the definition of the complexity factor for a charged self-gravitating structure in the background of f ( R , T ) $f(\mathbf {R},\mathbf {T})$ gravity. For this purpose, the modified Einstein-Maxwell field equations and the mass function in terms of interior charge are calculated corresponding to a static sphere. The Reissner-Nordström exterior spacetime and match it with the spherical interior at the hypersurface to determine the junction conditions are adopted then. The curvature tensor is also decomposed orthogonally, resulting in several scalar functions. Only Y T F $\mathbf {Y}_{TF}$ encompasses all the required parameters and fulfills the proposed criteria to be the complexity factor for the considered setup is noticed. Moreover, some constraints to minimize the degrees of freedom in the field equations are chosen. To achieve this, complexity-free constraint with four additional conditions depending on the matter sector that lead to different models is employed. The stability of the developed models is also analyzed in the presence and absence of charge through the standard model R + 2 ξ 3 T $\mathbf {R}+2\xi _3\mathbf {T}$ by varying the values of the model parameter ξ 3 $\xi _3$ . The presence of charge in compact models corresponding to P r = 0 $\mathrm{P}_r=0$ , a polytropic and a linear equation of state make them stable for specific values of ξ 3 $\xi _3$ is concluded.

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来源期刊
CiteScore
6.70
自引率
7.70%
发文量
75
审稿时长
6-12 weeks
期刊介绍: The journal Fortschritte der Physik - Progress of Physics is a pure online Journal (since 2013). Fortschritte der Physik - Progress of Physics is devoted to the theoretical and experimental studies of fundamental constituents of matter and their interactions e. g. elementary particle physics, classical and quantum field theory, the theory of gravitation and cosmology, quantum information, thermodynamics and statistics, laser physics and nonlinear dynamics, including chaos and quantum chaos. Generally the papers are review articles with a detailed survey on relevant publications, but original papers of general interest are also published.
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