Magnetic Catalysis of Chiral Symmetry Breaking in Gauge Theories
arXiv:hep-th/0001070
Abstract
Non-perturbative effect of the formation of a chiral symmetry breaking condensate <\barψψ> and of a dynamically generated fermion mass in QED in the presence of an external magnetic field is considered. The dynamical mass of a fermion (energy gap in the fermion spectrum) is shown to depend essentially nonanalytically on the renormalized coupling constant αin a strong magnetic field. Possible applications of this effect are discussed.
arXiv comment10 pages, Latex file, no figures. Talk given at the Bogolyubov Conference on Problems of Theoretical and Mathematical Physics, Moscow-Dubna-Kiev, 27 Sept - 6 Oct 1999