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Repulsive gravitational force and quintessence field in f(T) gravity: How anisotropic compact stars in strong energy condition behave
Modern Physics Letters A ( IF 1.5 ) Pub Date : 2021-02-02 , DOI: 10.1142/s0217732321500449
Mayukh Bandyopadhyay 1, 2 , Ritabrata Biswas 2
Affiliation  

Recently literature is found to be enriched with studies related to anisotropic behaviors of different compact stars in the background of [Formula: see text] gravity in different energy conditions. Quintessence field, as local impacts of cosmic acceleration upon the compact stars, is also very interesting in recent studies. In this paper, the quintessential field effects on the compact stars (mainly on the neutron stars with an wide range of mass distributions), repulsive gravitational effects inside the compact stars due to dark matter distribution in them, charge distribution inside them in strong energy condition, etc. are studied. All required equations of motion using anisotropic property and concept of Massachusetts Institute of Technology bag model are acquired. Black holes surrounded by quintessential matters which satisfy the additive and linearity conditions, with the form of energy tensors were proposed and the corresponding metric was derived by Kiselev.1 The metric, described by Krori and Barua2 with Reissner–Nordström metric3 are compared to find out the different numerical values of unknown parameters. The numerical values are derived and some important parameters like anisotropic stress, adiabatic constant, surface redshift, electric intensity, compactness factor, stability etc. are analyzed deeply to get a clear idea for further study on these types of stars and to understand their nature.

中文翻译:

f(T) 引力中的排斥引力和典型场:强能量条件下的各向异性致密恒星如何表现

最近的文献发现,在不同能量条件下[公式:见正文]重力背景下,有关不同致密恒星各向异性行为的研究丰富了文献。Quintessence 场,作为宇宙加速对致密恒星的局部影响,在最近的研究中也非常有趣。本文主要研究致密星(主要是质量分布范围大的中子星)上的典型场效应、致密星内部由于暗物质分布而产生的引力斥力效应、强能量条件下内部的电荷分布等进行研究。使用麻省理工学院袋模型的各向异性和概念获得所有所需的运动方程。1Krori 和 Barua 描述的指标2使用 Reissner–Nordström 度量3比较,找出未知参数的不同数值。推导了数值,并对各向异性应力、绝热常数、表面红移、电强度、致密因子、稳定性等重要参数进行了深入分析,为进一步研究这些类型的恒星和了解它们的性质提供了一个清晰的思路。
更新日期:2021-02-02
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