Compact Stars in Vector-Tensor-Horndeski Theory of Gravity

Abstract

In this paper, we will analyse a theory of modified gravity, in which the field content of general relativity will be increased to include a vector field. We will use the Horndeski formalism to non-minimally couple this vector field to the metric. As we will be using the Horndeski formalism, this theory will not contain Ostrogradsky ghost degree of freedom. We will analyse compact stars using this Vector-Tensor-Horndeski theory.

Accepted for publication in the European Physical Journal C, 16 pages, 4 figure

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• Singularity-free nonexotic compact star in $f(R,T)$ gravity
• The structure of hybrid neutron star in Einstein-$\Lambda$ gravity
• Neutron Stars in Mimetic Gravity