标题： 星系旋转曲线在$f(R,T)$改进引力形式主义中 显示英文标题

标题： The galaxy rotation curves in the $f(R,T)$ modified gravity formalism

摘要： 天文学数据表明，星系旋转曲线在星系核心的远距离区域大多是平坦的，这揭示了我们对这些区域内引力如何作用的知识不足。 在本文中，我们从$f(R,T)$修改引力形式主义的角度引入了这一问题的解决方案。 通过研究两类模型，其中包含可分离（最小耦合模型）和不可分离（非最小耦合模型）的曲率标量$R$和能量-动量张量的迹$T$的部分，我们发现只有在后一类模型中才有可能获得平坦的星系旋转曲线。 显示英文摘要

摘要： Astronomical data have shown that the galaxy rotation curves are mostly flat in the far distance of the galactic cores, which reveals the insufficiency of our knowledges about how gravity works in these regimes. In this paper we introduce a resolution of this issue from the $f(R,T)$ modified gravity formalism perspective. By investigating two classes of models with separable (minimal coupling model) and inseparable (non-minimal coupling model) parts of the Ricci scalar $R$ and trace of the energy-momentum tensor $T$, we find that only in the latter models it is possible to attain flat galaxy rotation curves.