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Title: Dynamical chiral symmetry breaking in QED{sub 3} at finite density and impurity potential

Abstract

We study the effects of finite chemical potential and impurity scattering on dynamical fermion mass generation in (2+1)-dimensional quantum electrodynamics. In any realistic systems, these effects usually cannot be neglected. The longitudinal component of the gauge field develops a finite static length produced by chemical potential and impurity scattering, while the transverse component remains long-ranged because of the gauge invariance. Another important consequence of impurity scattering is that the fermions have a finite damping rate, which reduces their lifetime. By solving the Dyson-Schwinger equation for the fermion mass function, it is found that these effects lead to strong suppression of the critical fermion flavor N{sub c} and the dynamical fermion mass in the symmetry broken phase.

Authors:
;  [1]
  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui, 230026 (China)
Publication Date:
OSTI Identifier:
21409333
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 81; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.81.045006; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRAL SYMMETRY; DENSITY; EQUATIONS; FERMIONS; FLAVOR MODEL; GAUGE INVARIANCE; LIFETIME; MASS; QUANTUM ELECTRODYNAMICS; SCATTERING; SYMMETRY BREAKING; THREE-DIMENSIONAL CALCULATIONS; COMPOSITE MODELS; ELECTRODYNAMICS; FIELD THEORIES; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; PARTICLE MODELS; PHYSICAL PROPERTIES; QUANTUM FIELD THEORY; QUARK MODEL; SYMMETRY

Citation Formats

Wei, Li, and Guozhu, Liu. Dynamical chiral symmetry breaking in QED{sub 3} at finite density and impurity potential. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.81.045006.
Wei, Li, & Guozhu, Liu. Dynamical chiral symmetry breaking in QED{sub 3} at finite density and impurity potential. United States. https://doi.org/10.1103/PHYSREVD.81.045006
Wei, Li, and Guozhu, Liu. Mon . "Dynamical chiral symmetry breaking in QED{sub 3} at finite density and impurity potential". United States. https://doi.org/10.1103/PHYSREVD.81.045006.
@article{osti_21409333,
title = {Dynamical chiral symmetry breaking in QED{sub 3} at finite density and impurity potential},
author = {Wei, Li and Guozhu, Liu},
abstractNote = {We study the effects of finite chemical potential and impurity scattering on dynamical fermion mass generation in (2+1)-dimensional quantum electrodynamics. In any realistic systems, these effects usually cannot be neglected. The longitudinal component of the gauge field develops a finite static length produced by chemical potential and impurity scattering, while the transverse component remains long-ranged because of the gauge invariance. Another important consequence of impurity scattering is that the fermions have a finite damping rate, which reduces their lifetime. By solving the Dyson-Schwinger equation for the fermion mass function, it is found that these effects lead to strong suppression of the critical fermion flavor N{sub c} and the dynamical fermion mass in the symmetry broken phase.},
doi = {10.1103/PHYSREVD.81.045006},
url = {https://www.osti.gov/biblio/21409333}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 4,
volume = 81,
place = {United States},
year = {2010},
month = {2}
}