Chiral Symmetry Breaking in an External Field

Details Chiral Symmetry Breaking in an External Field Chiral Symmetry Breaking in an External Field

1998-06-25

arxiv.org/abs/hep-th/9806208v1

AIPConf.Proc.444:443-451,1998

Physics

High Energy Physics

High Energy Physics - Theory

RevTeX; talk presented at the 2nd Latin American Symposium on High Energy Physics, San Juan, Puerto Rico, April 1998

Scientific paper

10.1063/1.56622

The effects of an external field on the dynamics of chiral symmetry breaking are studied using quenched, ladder QED as our model gauge field theory. It is found that a uniform external magnetic field enables the chiral symmetry to be spontaneously broken at weak gauge couplings, in contrast with the situation when no external field is present. The broken chiral symmetry is restored at high temperatures as well as at high chemical potentials. The nature of the two chiral phase transitions is different: the transition at high temperatures is a continuous one whereas the phase transition at high chemical potentials is discontinuous.

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