The effective potential of composite fields in weakly coupled QED in a uniform external magnetic field

Details The effective potential of composite fields in weakly coupled QED in a uniform external magnetic field The effective potential of composite fields in weakly coupled QED in a uniform external magnetic field

1998-10-19

arxiv.org/abs/hep-th/9810144v1

Phys.Rev. D59 (1999) 085008

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 1 figure, REVTeX, uses epsf.sty

Scientific paper

10.1103/PhysRevD.59.085008

The effective potential for the composite fields responsible for chiral symmetry breaking in weakly coupled QED in a magnetic field is derived. The global minimum of the effective potential is found to acquire a non-vanishing expectation value of the composite fields that leads to generating the dynamical fermion mass by an external magnetic field. The results are compared with those for the Nambu-Jona-Lasinio model.

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