The intrinsic degree of freedom for quasiparticle in thermodynamics with medium effects

TL;DR

This paper introduces an intrinsic degree of freedom, the effective mass, for quasiparticles in thermodynamics with medium effects, resolving ambiguities and ensuring self-consistency in the theoretical framework.

Contribution

It proposes a new intrinsic degree of freedom, the effective mass, to clarify thermodynamic descriptions of quasiparticles with medium effects.

Findings

The effective mass $m^*$ is a fundamental degree of freedom in quasiparticle thermodynamics.

The approach resolves previous ambiguities related to parameter dependence.

All results are shown to be self-consistent.

Abstract

The thermodynamics with medium effects expressed by the temperature- and density-dependent effective mass of quasiparticle is studied. Series difficulties and many wrangles in references due to the extraordinary parameter dependence are addressed. A new independent intrinsic degree of freedom of quasiparticle $m^*$ in the equation of reversible process is introduced to clear the ambiguity. We prove all results are self-consistent.