Thumbnail
Access Restriction
Open

Author Deog, K. H. ♦ Kim, Y. ♦ Sin, S.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ SYMMETRY BREAKING ♦ RENORMALIZATION ♦ MAGNETIC FIELDS ♦ FERMI INTERACTIONS ♦ ELECTROMAGNETIC INTERACTIONS ♦ COUPLING ♦ FERMIONS ♦ PROPAGATOR ♦ SCHWINGER FUNCTIONAL EQUATIONS ♦ EXTERNAL FIELDS
Abstract We perform the renormalization group analysis on dynamical symmetry breaking under a strong external magnetic field studied recently by Gusynin, Miransky, and Shovkovy. We find that any attractive four-Fermi interaction becomes strong at low energy, thus leading to dynamical symmetry breaking. When the four-Fermi interaction is absent, the {beta} function for the electromagnetic coupling vanishes in the leading order in 1/{ital N}. By solving the Schwinger-Dyson equation for the fermion propagator, we show that in the 1/{ital N} expansion, for any electromagnetic coupling, dynamical symmetry breaking occurs due to the presence of a Landau energy gap by the external magnetic field. {copyright} {ital 1996 The American Physical Society.}
ISSN 05562821
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-12-01
Publisher Place United States
Journal Physical Review, D
Volume Number 54
Issue Number 12


Open content in new tab

   Open content in new tab