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Improving the lattice QED action

Abstract

Strongly coupled QED is a model whose physics is dominated by short-ranged effects. In order to assess which features of numerical simulations of the chiral phase transition are universal and which are not, we have formulated a quenched version of the model in which photon degrees of freedom are defined on a lattice of spacing a, but fermions only on a lattice of spacing 2a. The fermi-photon interaction is then obtained via a blocking procedure, whose parameters allow a degree of control over the relative importance of short wavelength modes. Results from a variety of models are presented; the critical exponents {delta} and {beta}{sub m} governing the transition appear to be independent of the blocking, or even of whether a gauge-invariant action is used for the photons. ((orig.)).
Authors:
Hands, S [1] 
  1. Wales Univ., Swansea (United Kingdom). Dept. of Phys.
Publication Date:
Apr 01, 1995
Product Type:
Journal Article
Report Number:
CONF-9409269-
Reference Number:
SCA: 662110; 662220; PA: AIX-26:064391; EDB-95:132514; SN: 95001458405
Resource Relation:
Journal Name: Nuclear Physics B, Proceedings Supplements; Journal Volume: 42; Conference: Lattice `94, Bielefeld (Germany), 25 Sep - 1 Oct 1994; Other Information: PBD: Apr 1995
Subject:
66 PHYSICS; LATTICE FIELD THEORY; COMPUTERIZED SIMULATION; QUANTUM ELECTRODYNAMICS; UNIFIED GAUGE MODELS; ACTION INTEGRAL; CHIRALITY; DEGREES OF FREEDOM; ELECTROMAGNETIC FIELDS; ELECTROMAGNETIC INTERACTIONS; FERMIONS; GAUGE INVARIANCE; INTERACTION RANGE; LATTICE PARAMETERS; PHASE TRANSFORMATIONS; PHOTONS; PROPAGATOR; U-1 GROUPS; VECTOR FIELDS
OSTI ID:
101105
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: NPBSE7; ISSN 0920-5632; TRN: NL95FF437064391
Submitting Site:
NLN
Size:
pp. 663-665
Announcement Date:
Oct 05, 1995

Citation Formats

Hands, S. Improving the lattice QED action. Netherlands: N. p., 1995. Web. doi:10.1016/0920-5632(95)00343-8.
Hands, S. Improving the lattice QED action. Netherlands. doi:10.1016/0920-5632(95)00343-8.
Hands, S. 1995. "Improving the lattice QED action." Netherlands. doi:10.1016/0920-5632(95)00343-8. https://www.osti.gov/servlets/purl/10.1016/0920-5632(95)00343-8.
@misc{etde_101105,
title = {Improving the lattice QED action}
author = {Hands, S}
abstractNote = {Strongly coupled QED is a model whose physics is dominated by short-ranged effects. In order to assess which features of numerical simulations of the chiral phase transition are universal and which are not, we have formulated a quenched version of the model in which photon degrees of freedom are defined on a lattice of spacing a, but fermions only on a lattice of spacing 2a. The fermi-photon interaction is then obtained via a blocking procedure, whose parameters allow a degree of control over the relative importance of short wavelength modes. Results from a variety of models are presented; the critical exponents {delta} and {beta}{sub m} governing the transition appear to be independent of the blocking, or even of whether a gauge-invariant action is used for the photons. ((orig.)).}
doi = {10.1016/0920-5632(95)00343-8}
journal = {Nuclear Physics B, Proceedings Supplements}
volume = {42}
journal type = {AC}
place = {Netherlands}
year = {1995}
month = {Apr}
}