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Title: Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}

Abstract

By analyzing the strength of a photon-fermion coupling using basic scattering processes we calculate the effect of a velocity anisotropy on the critical number of fermions at which mass is dynamically generated in planar quantum electrodynamics. This gives a quantitative criterion which can be used to locate a quantum critical point at which fermions are gapped and confined out of the physical spectrum in a phase diagram of various condensed-matter systems. We also discuss the mechanism of relativity restoration within the symmetric quantum-critical phase of the theory.

Authors:
; ;  [1]
  1. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States)
Publication Date:
OSTI Identifier:
21287027
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 79; Journal Issue: 21; Other Information: DOI: 10.1103/PhysRevB.79.214525; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CHIRAL SYMMETRY; COMPUTERIZED SIMULATION; CONDENSATES; COUPLING; FERMIONS; MASS; PHASE DIAGRAMS; PHOTONS; QUANTUM ELECTRODYNAMICS; QUANTUM FIELD THEORY; SCATTERING; SPECTRA; SYMMETRY BREAKING; VELOCITY

Citation Formats

Concha, A, Stanev, V, and Tesanovic, Z. Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}. United States: N. p., 2009. Web. doi:10.1103/PHYSREVB.79.214525.
Concha, A, Stanev, V, & Tesanovic, Z. Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}. United States. https://doi.org/10.1103/PHYSREVB.79.214525
Concha, A, Stanev, V, and Tesanovic, Z. Mon . "Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}". United States. https://doi.org/10.1103/PHYSREVB.79.214525.
@article{osti_21287027,
title = {Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}},
author = {Concha, A and Stanev, V and Tesanovic, Z},
abstractNote = {By analyzing the strength of a photon-fermion coupling using basic scattering processes we calculate the effect of a velocity anisotropy on the critical number of fermions at which mass is dynamically generated in planar quantum electrodynamics. This gives a quantitative criterion which can be used to locate a quantum critical point at which fermions are gapped and confined out of the physical spectrum in a phase diagram of various condensed-matter systems. We also discuss the mechanism of relativity restoration within the symmetric quantum-critical phase of the theory.},
doi = {10.1103/PHYSREVB.79.214525},
url = {https://www.osti.gov/biblio/21287027}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 21,
volume = 79,
place = {United States},
year = {2009},
month = {6}
}