Light front QED$_{1+1}$ at finite temperature

TL;DR

This paper explores the thermodynamic behavior of 1+1 dimensional quantum electrodynamics using light front dynamics, deriving key quantities like the partition function and thermodynamical potential across different system sizes and couplings.

Contribution

It introduces a method to compute thermodynamic properties of QED$_{1+1}$ using light front quantization and analyzes the continuum and thermodynamical limits.

Findings

Calculated pressure, energy, and entropy as functions of temperature.

Compared interacting system results with ideal bosonic and fermionic cases.

Analyzed the continuum and thermodynamical limits.

Abstract

We investigate thermodynamic properties of quantum electrodynamics in 1+1 dimensions (QED$_{1+1}$) utilizing light front dynamics. Therefore we derive the partition function of the canonical ensemble in discrete light cone quantization, and calculate the thermodynamical potential. This central quantity is evaluated for different system sizes and coupling strengths. We investigate the continuum limit and the thermodynamical limit and present basic thermodynamical quantities such as pressure, energy, and entropy, as a function of temperature for the interacting system. The results are compared to the ideal bosonic and fermionic cases.