Two-flavor hybrid stars with the Dyson-Schwinger quark model

TL;DR

This paper explores the properties of two-flavor quark matter using the Dyson-Schwinger model and examines its implications for hybrid neutron stars, including mass limits and energy release during star conversion.

Contribution

It introduces a study of two-flavor quark matter within the Dyson-Schwinger framework and its impact on the structure and evolution of hybrid neutron stars.

Findings

Two-flavor quark matter can constitute up to 30% of heavy neutron stars.

Energy release during nucleonic to hybrid star conversion can reach 10^52 erg.

Model parameters significantly influence the quark matter fraction in stars.

Abstract

We study the properties of two-flavor quark matter in the Dyson-Schwinger model and investigate the possible consequences for hybrid neutron stars, with particular regard to the two-solar-mass limit. We find that with some extreme values of the model parameters, the mass fraction of two-flavor quark matter in heavy neutron stars can be as high as 30 percent and the possible energy release during the conversion from nucleonic neutron stars to hybrid stars can reach $10^{52}\;$erg.