Finite N Matrix Models of Noncommutative Gauge Theory

Details Finite N Matrix Models of Noncommutative Gauge Theory Finite N Matrix Models of Noncommutative Gauge Theory

1999-11-05

arxiv.org/abs/hep-th/9911041v3

JHEP 9911 (1999) 029

Physics

High Energy Physics

High Energy Physics - Theory

17 pp, Latex2e; Typos corrected, references added

Scientific paper

10.1088/1126-6708/1999/11/029

We describe a unitary matrix model which is constructed from discrete analogs of the usual projective modules over the noncommutative torus and use it to construct a lattice version of noncommutative gauge theory. The model is a discretization of the noncommutative gauge theories that arise from toroidal compactification of Matrix theory and it includes a recent proposal for a non-perturbative definition of noncommutative Yang-Mills theory in terms of twisted reduced models. The model is interpreted as a manifestly star-gauge invariant lattice formulation of noncommutative gauge theory, which reduces to ordinary Wilson lattice gauge theory for particular choices of parameters. It possesses a continuum limit which maintains both finite spacetime volume and finite noncommutativity scale. We show how the matrix model may be used for studying the properties of noncommutative gauge theory.

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