Hot hadron-quark mixed phase including hyperons

TL;DR

This paper investigates the hadron-quark phase transition at finite temperature, incorporating hyperons and finite size effects, revealing a softer equation of state and hyperon suppression relevant for neutron star phenomena.

Contribution

It introduces a realistic equation of state including hyperons and finite size effects, providing new insights into the properties of the hadron-quark mixed phase at finite temperature.

Findings

Equation of state becomes softer at finite temperature.

The mixed phase's properties are clarified under Gibbs conditions.

Hyperons are suppressed by the presence of quarks.

Abstract

We study the hadron-quark phase transition with the finite size effects at finite temperature. For the hadron phase, we adopt a realistic equation of state in the framework of the Brueckner-Hartree-Fock theory including hyperons. The properties of the mixed phase are clarified by considering the finite size effects under the Gibbs conditions. We find that the equation of state becomes softer than that at zero-temperature for some density region. We also find that the equation of state gets closer to that given by the Maxwell construction. Moreover, the number of hyperons is suppressed by the presence of quarks. These are characteristic features of the hadron-quark mixed phase, and should be important for many astrophysical phenomena such as mergers of binary neutron stars.