Canonical quantization and the spectral action; a nice example |
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Authors: | Fabien Besnard |
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Institution: | EPF, 3 bis rue Lakanal, 92330 Sceaux, France |
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Abstract: | We study the canonical quantization of the theory given by Chamseddine–Connes spectral action on a particular finite spectral triple with algebra M2(C)⊕C. We define a quantization of the natural distance associated with this noncommutative space and show that the quantum distance operator has a discrete spectrum. We also show that it would be the same for any other geometric quantity. Finally we propose a physical Hilbert space for the quantum theory. This spectral triple had been previously considered by Rovelli as a toy model, but with a different action which was not gauge invariant. The results are similar in the two cases, but the gauge invariance of the spectral action manifests itself by the presence of a non-trivial degeneracy structure for our distance operator. |
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Keywords: | 58B34 81R60 81S10 |
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