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.

我们在一类非最小耦合膨胀势，即万能吸引子的背景下研究静态中子星。众所周知，通用吸引子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学吸引子属于暴胀现象学的同一类别。我们在爱因斯坦坐标系和乔丹坐标系中展示了通用吸引子的基本特征，并使用理论天体物理学的常用符号提取了爱因斯坦坐标系中的托尔曼-奥本海默-沃尔科夫方程。我们使用基于 python 3 的双射数值代码进行数值分析，并构建了M - R通用吸引子势图，使用分段多方状态方程，其中小密度部分是 WFF1 或 APR 或 SLy 状态方程。正如我们所展示的，所有研究的案例都预测中子星的最大质量更大，并且所有结果都与施加在中子星半径上的 GW170817 约束兼容。