QED_3 on a space-time lattice: a comparison between compact and noncompact formulation

Details QED_3 on a space-time lattice: a comparison between compact and noncompact formulation QED_3 on a space-time lattice: a comparison between compact and noncompact formulation

2005-09-30

arxiv.org/abs/hep-lat/0509183v1

PoS LAT2005 (2005) 243

Physics

High Energy Physics

High Energy Physics - Lattice

6 page, 6 figure, poster presented at Lattice 2005 (Spin and Higgs models)

Scientific paper

Quantum electrodynamics in a (2+1)-dimensional space-time has been object of studies both as effective theory for the pseudogap phase of high-T_c superconductors and for the theoretical investigation of mechanisms of confinement in presence of matter fields. We discretize the theory using both compact and noncompact formulations, analyze the behavior of the chiral condensate and of the monopole density and compare them. Finally we draw some conclusions about the possible equivalence of the two lattice formulations.

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