Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a four-Fermi interaction
Abstract
We present results from the first lattice simulations of three-dimensional noncompact quantum electrodynamics (QED{sub 3}) with N{sub f} four-component fermion flavors coupled to a weak Z{sub 2} chirally invariant four-fermi 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 Gross-Neveu ultraviolet-stable renormalization group fixed point. Small deviations of the N{sub f}=4 critical exponents from the respective Gross-Neveu ones, hint at evidence for nonzero fermion mass generated by the gauge fields dynamics that might have been enhanced by the four-fermi coupling. It is also shown that the scaling region is suppressed at weak four-fermi 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 Physics-TQHN, University of Maryland, 82 Regents Drive, College Park, Maryland 20742 (United States)
- Computation-based 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 0556-2821
- 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; STRONG-COUPLING MODEL; SYMMETRY BREAKING; THREE-DIMENSIONAL CALCULATIONS; WEAK-COUPLING 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 four-Fermi 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 four-Fermi interaction. United States. https://doi.org/10.1103/PHYSREVD.82.014503
Armour, Wesley, Kogut, John B, and Strouthos, Costas. 2010.
"Chiral symmetry breaking and monopole dynamics in noncompact QED{sub 3} coupled to a four-Fermi 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 four-Fermi interaction},
author = {Armour, Wesley and Kogut, John B and Strouthos, Costas},
abstractNote = {We present results from the first lattice simulations of three-dimensional noncompact quantum electrodynamics (QED{sub 3}) with N{sub f} four-component fermion flavors coupled to a weak Z{sub 2} chirally invariant four-fermi 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 Gross-Neveu ultraviolet-stable renormalization group fixed point. Small deviations of the N{sub f}=4 critical exponents from the respective Gross-Neveu ones, hint at evidence for nonzero fermion mass generated by the gauge fields dynamics that might have been enhanced by the four-fermi coupling. It is also shown that the scaling region is suppressed at weak four-fermi 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 = {0556-2821},
number = 1,
volume = 82,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 2010},
month = {Thu Jul 01 00:00:00 EDT 2010}
}