Finite Gauge Theory on Fuzzy CP^2
High Energy Physics - Theory
2009-11-10 v1
Abstract
We give a non-perturbative definition of U(n) gauge theory on fuzzy CP^2 as a multi-matrix model. The degrees of freedom are 8 hermitian matrices of finite size, 4 of which are tangential gauge fields and 4 are auxiliary variables. The model depends on a noncommutativity parameter 1/N, and reduces to the usual U(n) Yang-Mills action on the 4-dimensional classical CP^2 in the limit N -> \infty. We explicitly find the monopole solutions, and also certain U(2) instanton solutions for finite N. The quantization of the model is defined in terms of a path integral, which is manifestly finite. An alternative formulation with constraints is also given, and a scaling limit as R^4_\theta is discussed.
Keywords
Cite
@article{arxiv.hep-th/0407089,
title = {Finite Gauge Theory on Fuzzy CP^2},
author = {Harald Grosse and Harold Steinacker},
journal= {arXiv preprint arXiv:hep-th/0407089},
year = {2009}
}
Comments
42 pages + 17 pages appendix, 1 figure