论文标题
能量摩托明方重力的牛仔裤分析
Jeans analysis in energy-momentum-squared gravity
论文作者
论文摘要
在本文中，我们研究了能量摩托符号重力（EMSG）的牛仔裤分析。更具体地说，我们发现针对非旋转无限介质的新牛仔裤是最小的局部扰动质量尺度，可以在其自身的重力上稳定。此外，对于旋转培养基，专门用于在EMSG的背景下旋转薄磁盘，我们找到了一个新的Toomre样标准，用于局部重力稳定性。最后，将结果应用于一个天体物理系统中的超质量中子恒星。使用简化的玩具模型，我们表明，对于EMSG参数$α$的正（负）值，该系统在$α$的范围内稳定（不稳定）。另一方面，尚无关于HMN中局部碎片化存在的观察证据。自然，这意味着从物理角度来看，具有正$α$的EMSG可以接受。
In this paper, we study the Jeans analysis in the context of energy-momentum-squared gravity (EMSG). More specifically we find the new Jeans mass for non-rotating infinite mediums as the smallest mass scale for local perturbations that can be stable against its own gravity. Furthermore, for rotating mediums, specifically for rotating thin disks in the context of EMSG, we find a new Toomre-like criterion for the local gravitational stability. Finally, the results are applied to a hyper-massive neutron star, as an astrophysical system. Using a simplified toy model we have shown that, for a positive (negative) value of the EMSG parameter $α$, the system is stable (unstable) in a wide range of $α$. On the other hand, no observational evidence has been reported on the existence of local fragmentation in HMNS. Naturally, this means that EMSG with positive $α$ is more acceptable from the physical point of view.
