Neutron Star Structure in Ho\v{r}ava-Lifshitz Gravity

TL;DR

This paper explores how neutron star structures differ in Hořava-Lifshitz gravity compared to general relativity, showing that HL gravity predicts larger, more massive, yet stable neutron stars.

Contribution

It derives the Tolman-Oppenheimer-Volkoff equation within Hořava-Lifshitz gravity and analyzes the resulting neutron star properties.

Findings

Neutron stars in HL gravity have larger radii and masses than in GR.

HL gravity predicts stable neutron stars that do not collapse into black holes.

Modified gravity effects can significantly alter neutron star characteristics.

Abstract

We present interesting aspects of neutron stars (NSs) from the standpoint of a modified theory of gravity called Ho\v{r}ava-Lifshitz (HL) gravity. A deviation from general relativity (GR) in HL gravity can change typical features of the NS structure. In this study, we investigate the NS structure by deriving the Tolman-Oppenheimer-Volkoff equation in HL gravity. We find that a NS in HL gravity with a larger radius and heavier mass than a NS in GR remains stable without collapsing into a black hole.