Mon·Nov 26, 2001Monday·November 26, 2001

1. 01*

   Analytic calculation of the mass gap in U(1)_{2+1} lattice gauge theory

   John A.L. McIntosh🇦🇺 · Lloyd C.L. Hollenberg🇦🇺

   An analytic calculation of the photon mass gap M of compact U(1)_{2+1} in the Hamiltonian formalism is performed utilizing the first four Hamiltonian moments with respect to a one-plaquette mean field state in the plaquette expansion method. Scaling of M is clearly evident at and beyond the transition from strong to weak coupling. The scaling behaviour agrees well with the range of results from numerical calculations.

   hep-latNucl.Phys.B Proc.Suppl.(2002)·2 citations
2. 02*

   Mesons in Transverse Lattice QCD at Strong Coupling and Large-N

   Apoorva Patel (CTS and SERC, IISc, Bangalore)🇮🇳

   Mesons in large-N QCD are analysed in light-front coordinates with a transverse lattice at strong coupling. In this limit, their properties can be expressed as simple renormalisations of the 't Hooft model results. The integral eigenvalue equation for the mesons is derived. Spectrum, lightcone wavefunctions and form factors of various mesons can be numerically calculated from this equation.

   hep-lathep-phNucl.Phys.B Proc.Suppl.(2002)·4 citations
3. 03*

   The Phase Diagram for the anisotropic SU(2) Adjoint Higgs Model in 5D: Lattice Evidence for Layered Structure

   P. Dimopoulos🇪🇸 · K. Farakos🇬🇷 · G. Koutsoumbas🇬🇷

   We explore, by Monte Carlo and Mean Field methods, the five--dimensional SU(2) adjoint Higgs model. We allow for the possibility of different couplings along one direction, describing the so--called anisotropic model. This study is motivated by the possibility of the appearance of four--dimensional layered dynamics. Actually, our results lead to the conclusion that the establishment of a layered phase in four dimensions described by U(1) symmetry is possible, the extra dimension being confined due to the SU(2) gauge symmetry. The five-dimensional adjoint Higgs model turns out to have a layered phase, in contradistinction with what is known about the pure SU(2) model.

   hep-lathep-thPRD(2002)·22 citations
4. 04*

   A lattice approach to QCD in the chiral regime

   Michele Della Morte (DESY-Zeuthen)🇩🇪 · Roberto Frezzotti (Univ. of Milano Bicocca)🇮🇹 · Jochen Heitger (Westfaelische Wilhelms-Universitaet Muenster)🇩🇪

   Non-perturbative lattice studies of QCD in the chiral thermodynamic regime, where chiral symmetry is spontaneously broken, require to deal with almost quark zero modes in a theoretically clean and computationally efficient way. We discuss the basic features and some realistic tests of a formulation, known as lattice tmQCD, that fulfills these requirements. Based on a talk given by R. Frezzotti at the conference HEP2001 (Budapest, July 2001)

   hep-latPoS(2001)·8 citations
5. 05*

   Radiatively-induced Magnetic moment in four-dimensional anisotropic QED in an external magnetic field

   Jean Alexandre🇬🇧 · Nick E. Mavromatos (King's Coll. London)🇬🇧

   We discuss one-loop radiatively-induced magnetic moment in four-dimensional quantum electrodynamics (QED) with anisotropic coupling, and examine various cases which may be of interest in effective gauge theories of antiferromagnets, whose planar limit coresponds to highly anisotropic QED couplings. We find a different scaling with the magnetic field intensity in case there are extra statistical gauge interactions in the model with spontaneous symmetry breaking. Such a case is encountered in the CP-1 sigma-model sector of effective spin-charge separated gauge theories of antiferromagnetic systems. Our work provides therefore additional ways of possible experimental probing of the gauge nature of such systems.

   ↳ hep-phcond-mat.str-elhep-lathep-thPRB(2002)·1 citation

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.