Chiral symmetry breaking in a uniform external magnetic field. II. Symmetry restoration at high temperatures and chemical potentials

Journal Article · Wed Apr 01 00:00:00 EST 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.57.5224· OSTI ID:627848

Lee, D ^[1]; Leung, C N ^[2]; Ng, Y J ^[3]

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1. Department of Physics, National Dong Hwa University, Shoufeng, Hualien974 (Taiwan)
2. Department of Physics and Astronomy, University of Delaware, Newark, Delaware19716 (United States)
3. Institute of Field Physics, Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina27599 (United States)

Chiral symmetry is dynamically broken in quenched, ladder QED at weak gauge couplings when an external magnetic field is present. In this paper, we show that chiral symmetry is restored above a critical chemical potential and the corresponding phase transition is of first order. In contrast, the chiral symmetry restoration at high temperatures (and at zero chemical potential) is a second order phase transition. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 627848
• Journal Information: Physical Review, D, Vol. 57, Issue 8; Other Information: PBD: Apr 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
MAGNETIC FIELDS
CHIRAL SYMMETRY
SYMMETRY BREAKING
QUANTUM ELECTRODYNAMICS
COUPLING
PHASE TRANSFORMATIONS
FERMIONS
MASS