Two component boson-fermion plasma at finite temperature

TL;DR

This paper uses path integral Monte Carlo simulations to study the thermodynamic stability and structure of a two-component plasma with different quantum statistics at finite temperature, revealing stability issues and phase transitions.

Contribution

It provides the first detailed simulation-based analysis of a two-component boson-fermion plasma, exploring stability and binding phenomena across different quantum compositions.

Findings

Purely bosonic plasma is thermodynamically unstable.

Pure fermionic plasma exhibits a demixing transition with like-species binding.

Structure analysis shows formation of bound pairs of oppositely charged particles.

Abstract

We discuss thermodynamic stability of neutral real (quantum) matter from the point of view of a computer experiment at finite, non-zero, temperature. We perform (restricted) path integral Monte Carlo simulations of the two component plasma where the two species are all bosons, all fermions, and one boson and one fermion. We calculate the structure of the plasma and discuss about the formation of binded couples of oppositely charged particles. The purely bosonic case is thermodynamically unstable. In this case we find an undetermined size dependent contact value of the unlike partial radial distribution function. For the purely fermionic case we find a demixing transition with binding also of like species.