Nonextensive Nuclear Liquid-Gas Phase Transition

TL;DR

This paper explores how nonextensive statistical mechanics influences the nuclear liquid-gas phase transition in asymmetric nuclear matter at finite temperature, highlighting the significance of nonextensive effects on the equation of state and phase formation.

Contribution

It introduces an effective relativistic mean-field model incorporating nonextensive statistics to analyze nuclear phase transitions with asymmetric matter.

Findings

Nonextensive effects significantly alter the equation of state.

The mixed phase formation is affected by nonextensive statistical deviations.

Thermodynamic instability is influenced by nonextensive parameters.

Abstract

We study an effective relativistic mean-field model of nuclear matter with arbitrary proton fraction at finite temperature in the framework of nonextensive statistical mechanics, characterized by power-law quantum distributions. We investigate the presence of thermodynamic instability in a warm and asymmetric nuclear medium and study the consequent nuclear liquid-gas phase transition by requiring the Gibbs conditions on the global conservation of baryon number and electric charge fraction. We show that nonextensive statistical effects play a crucial role in the equation of state and in the formation of mixed phase also for small deviations from the standard Boltzmann-Gibbs statistics.