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 longranged 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 DysonSchwinger 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:

 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 05562821
 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; THREEDIMENSIONAL 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 longranged 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 DysonSchwinger 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 = {05562821},
number = 4,
volume = 81,
place = {United States},
year = {2010},
month = {2}
}