On the stability of electrostatics stars with modified non-gauge invariant Einstein-Maxwell gravity
Tóm tắt
We use a modified Einstein-Maxwell gravity to study stability of an electrostatic spherical star. Correction terms in this model are scalars which are made from contraction of Ricci tensor and electromagnetic vector potential. Our motivation to use this kind of exotic Einstein-Maxwell 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 Einstein-Maxwell gravity. In this work, we use approach of dynamical systems to obtain stability conditions of such a star and we investigate interaction parts effect of the model on the stability.
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