Chiral symmetry restoration in anisotropic QED{sub 3}
- Department of Physics, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)
- Department of Physics, Swansea University, Singleton Park, Swansea SA2 8PP (United Kingdom)
We present results from a Monte Carlo simulation of noncompact lattice QED in three dimensions in which an explicit anisotropy {kappa} between x and y hopping terms has been introduced into the action. Using a parameter set corresponding to broken chiral symmetry in the isotropic limit {kappa}=1, we study the chiral condensate on 16{sup 3}, 20{sup 3}, and 24{sup 3} lattices as {kappa} is varied, and fit the data to an equation of state which incorporates anisotropic volume corrections. The value {kappa}{sub c} at which chiral symmetry is apparently restored is strongly volume dependent, suggesting that the transition may be a crossover rather than a true phase transition. In addition we present results on 16{sup 3} lattices for the scalar meson propagator, and for the Landau gauge-fixed fermion propagator. The scalar mass approaches the pion mass at large {kappa}, consistent with chiral symmetry restoration, but the fermion remains massive at all values of {kappa} studied, suggesting that strong infrared fluctuations persist into the chirally symmetric regime. Implications for models of high-T{sub c} superconductivity based on anisotropic QED{sub 3} are discussed.
- OSTI ID:
- 20957792
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 13 Vol. 75; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CHIRAL SYMMETRY
COMPUTERIZED SIMULATION
EQUATIONS OF STATE
FERMIONS
FLUCTUATIONS
HIGH-TC SUPERCONDUCTORS
LATTICE FIELD THEORY
MONTE CARLO METHOD
PIONS
QUANTUM ELECTRODYNAMICS
SCALAR MESONS
SUPERCONDUCTIVITY
THREE-DIMENSIONAL CALCULATIONS