Neutron Stars in Mimetic Gravity

TL;DR

This paper explores how mimetic gravity modifies neutron star structure equations, showing it can better fit observational data with certain equations of state compared to general relativity.

Contribution

It revisits the hydrostatic equilibrium equation in mimetic gravity and compares neutron star properties with those in general relativity using various equations of state.

Findings

Mimetic gravity allows for equations of state that fit observational data.

Relativistic mean-field models align better with observations than non-relativistic models.

Mimetic gravity provides an alternative framework to explain neutron star properties.

Abstract

In this paper, a modified version of the hydrostatic equilibrium equation based on the mimetic gravity in the presence of perfect fluid is revisited. By using the different known equation of states, the structural properties of neutron stars are investigated in general relativity and mimetic gravity. Comparing the obtained results, we show that, unlike general relativity, we can find the appropriate equation of states that support observational data in the context of mimetic gravity. We also find that the results of relativistic mean-field-based models of the equation of states are in better agreement with observational data than non-relativistic models.