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(2+1)-dimensional lattice QCD

Peter Orland*

  • Kavli Institute for Theoretical Physics, The University of California, Santa Barbara, California 93106, USA
  • Physics Program, The Graduate School and University Center, The City University of New York, 365 Fifth Avenue, New York, New York 10016, USA
  • Department of Natural Sciences, Baruch College, The City University of New York, 17 Lexington Avenue, New York, New York 10010, USA

  • *Electronic address: orland@gursey.baruch.cuny.edu

Phys. Rev. D 71, 054503 – Published 9 March, 2005

DOI: https://doi.org/10.1103/PhysRevD.71.054503

Abstract

We consider a (2+1)-dimensional SU(N) lattice gauge theory in an axial gauge with the link field U1 set equal to one. The term in the Hamiltonian containing the square of the electric field in the 1-direction is nonlocal. Despite this nonlocality, we show that weak-coupling perturbation theory in this term gives a finite vacuum-energy density to second order, and suggest that this property holds to all orders. Heavy quarks are confined, the spectrum is gapped, and the spacelike Wilson loop has area decay.

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