Area-preserving diffeomorphisms in gauge theory on a non-commutative plane: a lattice study

Details Area-preserving diffeomorphisms in gauge theory on a non-commutative plane: a lattice study Area-preserving diffeomorphisms in gauge theory on a non-commutative plane: a lattice study

2007-05-24

arxiv.org/abs/0705.3536v2

JHEP 0708:041,2007

Physics

High Energy Physics

High Energy Physics - Lattice

28 pages, 15 figures, published version

Scientific paper

10.1088/1126-6708/2007/08/041

We consider Yang-Mills theory with the U(1) gauge group on a non-commutative plane. Perturbatively it was observed that the invariance of this theory under area-preserving diffeomorphisms (APDs) breaks down to a rigid subgroup SL(2,R). Here we present explicit results for the APD symmetry breaking at finite gauge coupling and finite non-commutativity. They are based on lattice simulations and measurements of Wilson loops with the same area but with a variety of different shapes. Our results are consistent with the expected loss of invariance under APDs. Moreover, they strongly suggest that non-perturbatively the SL(2,R) symmetry does not persist either.

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