标题： 关于修改的非规范不变爱因斯坦-麦克斯韦引力中静电星体的稳定性 显示英文标题

标题： On the stability of electrostatics stars with modified non-gauge invariant Einstein-Maxwell gravity

摘要： 我们使用一种修改的爱因斯坦-麦克斯韦引力来研究静电球形星体的稳定性。 此模型中的修正项是标量，它们是由里奇张量和电磁矢量势的收缩构成的。 我们使用这种奇异的电磁引力的原因是宇宙磁场在宇宙膨胀中的不可避免影响，这目前被观测到，但在通常的规范不变电磁引力中其强度被抑制。 在本工作中，我们使用动力系统方法来获得此类星体的稳定性条件，并研究模型中相互作用部分对稳定性的影响。 显示英文摘要

摘要： We use a modified Einstein-Maxwell gravity to study stability of an electrostatic spherical star. Correction terms in this model are scalers which are made from contraction of Ricci tensor and electromagnetic vector potential. Our motivation to use this kind of exotic EM gravity is inevitable influence of cosmic magnetic field in inflation of the universe which is observed now but its intensity suppresses in the usual gauge invariant EM gravity. In this work we use dynamical systems approach to obtain stability conditions of such a star and investigation of affects of interaction parts of the model on the stability.