Noncommutative Gauge Theory on Fuzzy Four-Sphere and Matrix Model
We study a noncommutative gauge theory on a fuzzy four-sphere. The idea is to use a matrix model with a fifth-rank Chern-Simons term and to expand matrices around the fuzzy four-sphere which corresponds to a classical solution of this model. We need extra degrees of freedom since algebra of coordina...
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| Format: | Text |
| Language: | unknown |
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arXiv
2002
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| Online Access: | https://dx.doi.org/10.48550/arxiv.hep-th/0204256 https://arxiv.org/abs/hep-th/0204256 |
| Summary: | We study a noncommutative gauge theory on a fuzzy four-sphere. The idea is to use a matrix model with a fifth-rank Chern-Simons term and to expand matrices around the fuzzy four-sphere which corresponds to a classical solution of this model. We need extra degrees of freedom since algebra of coordinates does not close on the fuzzy four-sphere. In such a construction, a fuzzy two sphere is added at each point on the fuzzy four-sphere as extra degrees of freedom. It is interesting that fields on the fuzzy four-sphere have higher spins due to the extra degrees of freedom. We also consider a theory around the north pole and take a flat space limit. A noncommutative gauge theory on four-dimensional plane, which has Heisenberg type noncommutativity, is considered. : 22 pages, eq.(36) and section 4 are modified |
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