Predictions for neutron stars from holographic nuclear matter

TL;DR

This paper uses a holographic model to predict neutron star properties, combining theoretical calculations with astrophysical data to constrain maximum mass and tidal deformability.

Contribution

It introduces a holographic approach to neutron star modeling, providing new constraints on star properties independent of model parameters.

Findings

Maximum neutron star mass predicted around 2.46 solar masses

Lower limit for tidal deformability of 1.4-solar-mass star is about 277

Constraints are more stringent than those from data alone

Abstract

We discuss masses, radii, and tidal deformabilities of neutron stars constructed from the holographic Witten-Sakai-Sugimoto model. Using the same model for crust and core of the star, we combine our theoretical results with the latest astrophysical data, thus deriving more stringent constraints than given by the data alone. For instance, our calculation predicts -- independent of the model parameters -- an upper limit for the maximal mass of the star of about 2.46 solar masses and a lower limit of the (dimensionless) tidal deformability of a 1.4-solar-mass star of about 277.