Effective potential of composite fields in weakly coupled QED in a uniformexternal magnetic field - art. no. 085008

Authors
Lee, DS McGraw, PN Ng, YJ Shovkovy, IA
Citation
Ds. Lee et al., Effective potential of composite fields in weakly coupled QED in a uniformexternal magnetic field - art. no. 085008, PHYS REV D, 5908(8), 1999, pp. 5008
Citations number
33
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
5908
Issue
8
Year of publication
1999
Database
ISI
SICI code
0556-2821(19990415)5908:8<5008:EPOCFI>2.0.ZU;2-W
Abstract
The effective potential for the composite fields responsible for chiral sym metry breaking in weakly coupled QED in a magnetic field is derived. The gl obal minimum of the effective potential is found to acquire a non-vanishing expectation value of the composite fields that leads to generating the dyn amical fermion mass by an external magnetic held. The results are compared with those for the Nambu-Jona-Lasinio model. [S0556-2821(99)03408-6].