论文标题

中性紧凑的球形对称星,触发性重力

Neutral compact spherically symmetric stars in teleparallel gravity

论文作者

Nashed, G. G. L., Abebe, Amare, Bamba, Kazuharu

论文摘要

我们提出了新颖的中性和未充电的解决方案,这些解决方案描述了爱因斯坦群集的一般相对论(TEGR)。为此,我们使用具有非对角性球形对称性的四局场,这使TEGR理论中的重力场方程消失了。簇是通过使用各向异性能量量张量来计算的。我们使用两个假设来求解TEGR理论的场方程:第一个是使用将密度与切向压力相关的状态方程,而第二个假设则是假定出现在非二元对二甲体中的两个未知函数之一的特定形式。在本研究中提出的许多事情中,我们研究了静态稳定性规范。我们还研究了这些溶液的托尔曼 - 欧彭海默 - 沃尔科夫方程,除了能源条件。讨论了与稳定极限有关的因素指数的因果关系限制。

We present novel neutral and uncharged solutions that describe the cluster of Einstein in the teleparallel equivalent of general relativity (TEGR). To this end, we use a tetrad field with non-diagonal spherical symmetry which gives the vanishing of the off-diagonal components for the gravitational field equations in the TEGR theory. The clusters are calculated by using an anisotropic energy-momentum tensor. We solve the field equations of TEGR theory, using two assumptions: the first one is by using an equation of state that relates density with tangential pressure while the second postulate is to assume a specific form of one of the two unknown functions that appear in the non-diagonal tetrad field. Among many things presented in this study, we investigate the static stability specification. We also study the Tolman-Oppenheimer-Volkoff equation of these solutions in addition to the conditions of energy. The causality constraints with the adiabatic index in terms of the limit of stability are discussed.

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