The properties of strange quark matter and evolution of strange quark stars

TL;DR

This paper investigates the properties and evolution of strange quark stars using a thermodynamic approach, showing their consistency with certain observational data and detailing the transition from proto to stable strange stars.

Contribution

It provides a comprehensive thermodynamic framework for modeling the evolution of strange quark stars from proto to stable states, aligning with observational data.

Findings

Cold strange quark stars match observed mass-radius data.

Evolution process from proto to stable strange stars is characterized.

Thermodynamic properties are consistent across different star stages.

Abstract

In this work, we study the properties of strange quark matter and reveal the evolution process of strange quark stars employing a self consistent thermodynamic treatment. A comprehensive and reliable thermodynamic basis for the study of the dynamic evolution from proto-strange quark stars to stable strange stars at a zero temperature is provided. The relative abundance of particles, equation of state, temperature, and mass-radius relationship at each stage of the evolution of stars are discussed, where the cold strange quark star are consistent with the observational mass and radius of Hess J1731-347, PSR J1231-1411, PSR J0030+0451, PSR J0348+0432, and PSR J0740+6620, which could be difficult to be explained by the standard neutron star model. A schematic diagram is provided as well, illustrating the state of different stages along the evolution of stars at a fixed baryon-mass.