具有广义多向状态方程的带电各向异性模型

IF 3 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Annals of Physics Pub Date : 2025-09-18 DOI:10.1016/j.aop.2025.170229

D. Kileba Matondo , T.P. Mafa , S.D. Maharaj

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引用次数: 0

摘要

我们分析了电磁场中满足广义状态方程的各向异性物质分布。在适当选择参数的情况下，广义状态方程可简化为标准的多色体和夸克物质。对于多向指数的特定选择，发现了爱因斯坦-麦克斯韦方程组的新精确解。已知的精确解作为特殊情况重新得到。非零电场对模型的行为有显著影响，并影响引力动力学。满足了物理上可接受的相对论性致密物体的要求。

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Charged anisotropic model with generalised polytropic equation of state

We analyse matter distributions which are anisotropic and satisfy a generalised equation of state in an electromagnetic field. The generalised equation of state reduces to the standard polytrope and quark matter for suitable choices of parameters. New classes of exact solutions to the Einstein–Maxwell system are found for particular choices of the polytropic index. Known exact solutions are regained as special cases. The nonzero electric field has a significant effect on the behaviour of the model and affects the gravitational dynamics. The requirements for a physically acceptable relativistic compact object are satisfied.

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来源期刊

Annals of Physics 物理-物理：综合

CiteScore

5.30

自引率

3.30%

发文量

211

审稿时长

47 days

期刊介绍： Annals of Physics presents original work in all areas of basic theoretic physics research. Ideas are developed and fully explored, and thorough treatment is given to first principles and ultimate applications. Annals of Physics emphasizes clarity and intelligibility in the articles it publishes, thus making them as accessible as possible. Readers familiar with recent developments in the field are provided with sufficient detail and background to follow the arguments and understand their significance. The Editors of the journal cover all fields of theoretical physics. Articles published in the journal are typically longer than 20 pages.