QED(1+1) at Finite Temperature -- a Study with Light-Cone Quantisation

Abstract

We explore quantum electrodynamics in (1+1) dimensions at finite temperature using the method of Discretized Light-Cone Quantisation. The partition function, energy and specific heat are computed in the canonical ensemble using the spectrum of invariant masses computed with a standard DLCQ numerical routine. In particular, the specific heat exhibits a peak which grows as the continuum limit is numerically approached. A critical exponent is tentatively extracted. The surprising result is that the density of states contains significant finite size artifacts even for a relatively high harmonic resolution. These and the other outstanding problems in the present calculation are discussed.

10 pages, 11 Postscript figures, uses epsf.sty

Cited by in corpus (16)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Light-Front Quantum Chromodynamics: A framework for the analysis of hadron physics
• Nonperturbative light-front Hamiltonian methods
• Statistical Physics and Light-Front Quantization
• Spectrum and thermodynamic properties of two-dimensional N=(1,1) super Yang-Mills theory with fundamental matter and a Chern-Simons term
• Calculations with DLCQ
• Equivalence of light-front and conventional thermal field theory
• N=(1,1) super Yang--Mills theory in 1+1 dimensions at finite temperature
• Light front QED${}_{1+1}$ at finite temperature
• Light-front Nambu--Jona-Lasinio model at finite temperature and density
• Density of States of the lattice Schwinger model
• Light-front analysis of the Casimir effect
• Nonperturbative light-front effective potential for static sources in quenched scalar Yukawa theory
• Renormal-order improvement of the Schwinger mass
• Casimir force on a light front
• The Casimir effect in light-front quantization