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

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

1996-01-10

arxiv.org/abs/hep-th/9601045v1

Phys.Lett. B375 (1996) 285-291

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 11 Postscript figures, uses epsf.sty

Scientific paper

10.1016/0370-2693(96)00201-8

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.

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