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arXiv 2107.12430gr-qcastro-ph.CO
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静态中子星的万有暴胀吸引子

Universal Inflationary Attractors Implications on Static Neutron Stars

V. K. Oikonomou

摘要:

我们研究静态中子星的背景下,一类非最小耦合的暴胀势,普遍吸引子。普遍吸引子被认为会产生一个可行的暴胀时代,它们与$R^2$模型和其他著名的宇宙吸引子属于同一类暴胀现象。我们提出的爱因斯坦和约旦框架中的普遍吸引子的基本特征,我们提取的Tolman-Oppenheimer-Einstein框架中使用通常的符号的理论天体物理方程。我们使用基于Python 3的双射击数值代码进行数值分析,并使用分段多方状态方程构造通用吸引子势的$M-R$图,其中小密度部分是WFF 1或APR或SLy状态方程。正如我们所示,所有的研究情况下预测较大的最大质量的中子星,所有的结果是兼容的GW 170817的限制强加在中子星的半径。

英文摘要:

We study static neutron stars in the context of a class of non-minimally coupled inflationary potentials, the universal attractors. Universal attractors are known to generate a viable inflationary era, and they fall into the same category of inflationary phenomenology as the $R^2$ model and other well-known cosmological attractors. We present the essential features of universal attractors in both the Einstein and Jordan frame, and we extract the Tolman-Oppenheimer-Volkoff equations in the Einstein frame using the usual notation of theoretical astrophysics. We use a python 3 based double shooting numerical code for our numerical analysis and we construct the $M-R$ graphs for the universal attractor potential, using piecewise polytropic equation of state the small density part of which is the WFF1 or the APR or the SLy equation of state. As we show, all the studied cases predict larger maximum masses for the neutron stars, and all the results are compatible with the GW170817 constraints imposed on the radii of the neutron stars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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