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

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.

6 pages, 7 figures, 2 tables, RevTex4

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• Density of States of the lattice Schwinger model
• High Resolution Nonperturbative Light-Front Simulations of the True Muonium Atom
• Casimir force on a light front
• Thermofield-Bosonization on Compact Space