Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a fourFermi interaction
Abstract
We present results from the first lattice simulations of threedimensional noncompact quantum electrodynamics (QED{sub 3}) with N{sub f} fourcomponent fermion flavors coupled to a weak Z{sub 2} chirally invariant fourfermi interaction. Results with N{sub f{>=}}4 show that the scaling near the strong coupling chiral transition or sharp crossover is determined by the 3d GrossNeveu ultravioletstable renormalization group fixed point. Small deviations of the N{sub f}=4 critical exponents from the respective GrossNeveu ones, hint at evidence for nonzero fermion mass generated by the gauge fields dynamics that might have been enhanced by the fourfermi coupling. It is also shown that the scaling region is suppressed at weak fourfermi couplings and large N{sub f} values. Measurements of (i) a monopole susceptibility which is the polarizability of the monopole configurations, and (ii) the density of isolated monopoles, imply that for N{sub f{>=}}1 and weak gauge couplings the monopoles do not affect the theory's confining properties, because they are shielded.
 Authors:

 Diamond Light Source, Harwell Campus, Didcot, Oxfordshire OX11 0DE (United Kingdom)
 Department of Energy, Division of High Energy Physics, Washington, D.C. 20585 (United States) and Department of PhysicsTQHN, University of Maryland, 82 Regents Drive, College Park, Maryland 20742 (United States)
 Computationbased Science and Technology Research Center, Cyprus Institute, 1645 Nicosia (Cyprus)
 Publication Date:
 OSTI Identifier:
 21410048
 Resource Type:
 Journal Article
 Journal Name:
 Physical Review. D, Particles Fields
 Additional Journal Information:
 Journal Volume: 82; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.82.014503; (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; CHIRALITY; COMPUTERIZED SIMULATION; CONFIGURATION; COUPLING; FERMI INTERACTIONS; FERMIONS; FLAVOR MODEL; GAUGE INVARIANCE; LATTICE FIELD THEORY; MASS; MONOPOLES; POLARIZABILITY; QUANTUM ELECTRODYNAMICS; RENORMALIZATION; STRONGCOUPLING MODEL; SYMMETRY BREAKING; THREEDIMENSIONAL CALCULATIONS; WEAKCOUPLING MODEL; BASIC INTERACTIONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; ELECTRICAL PROPERTIES; ELECTRODYNAMICS; FIELD THEORIES; INTERACTIONS; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; NUCLEAR MODELS; PARTICLE MODELS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; QUANTUM FIELD THEORY; QUARK MODEL; SIMULATION; SYMMETRY; WEAK INTERACTIONS
Citation Formats
Armour, Wesley, Kogut, John B, and Strouthos, Costas. Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a fourFermi interaction. United States: N. p., 2010.
Web. doi:10.1103/PHYSREVD.82.014503.
Armour, Wesley, Kogut, John B, & Strouthos, Costas. Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a fourFermi interaction. United States. https://doi.org/10.1103/PHYSREVD.82.014503
Armour, Wesley, Kogut, John B, and Strouthos, Costas. Thu .
"Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a fourFermi interaction". United States. https://doi.org/10.1103/PHYSREVD.82.014503.
@article{osti_21410048,
title = {Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a fourFermi interaction},
author = {Armour, Wesley and Kogut, John B and Strouthos, Costas},
abstractNote = {We present results from the first lattice simulations of threedimensional noncompact quantum electrodynamics (QED{sub 3}) with N{sub f} fourcomponent fermion flavors coupled to a weak Z{sub 2} chirally invariant fourfermi interaction. Results with N{sub f{>=}}4 show that the scaling near the strong coupling chiral transition or sharp crossover is determined by the 3d GrossNeveu ultravioletstable renormalization group fixed point. Small deviations of the N{sub f}=4 critical exponents from the respective GrossNeveu ones, hint at evidence for nonzero fermion mass generated by the gauge fields dynamics that might have been enhanced by the fourfermi coupling. It is also shown that the scaling region is suppressed at weak fourfermi couplings and large N{sub f} values. Measurements of (i) a monopole susceptibility which is the polarizability of the monopole configurations, and (ii) the density of isolated monopoles, imply that for N{sub f{>=}}1 and weak gauge couplings the monopoles do not affect the theory's confining properties, because they are shielded.},
doi = {10.1103/PHYSREVD.82.014503},
url = {https://www.osti.gov/biblio/21410048},
journal = {Physical Review. D, Particles Fields},
issn = {05562821},
number = 1,
volume = 82,
place = {United States},
year = {2010},
month = {7}
}