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Background independent noncommutative gravity from Fedosov quantization of endomorphism bundle. (English) Zbl 1368.83050

Summary: A model of noncommutative gravity is constructed by means of B. Fedosov [Deformation quantization and index theory. Berlin: Akademie Verlag (1996; Zbl 0867.58061)] deformation quantization of an endomorphism bundle. The fields describing noncommutativity – symplectic form and symplectic connection – are dynamical, and the resulting theory is coordinate covariant and background independent. Its interpretation in terms of a Seiberg-Witten map is provided. Also, a new action for ordinary (commutative) general relativity is given, which in the present context appears as a commutative limit of noncommutative theory.

MSC:

83C65 Methods of noncommutative geometry in general relativity
83C45 Quantization of the gravitational field
58J22 Exotic index theories on manifolds
53D55 Deformation quantization, star products

Citations:

Zbl 0867.58061

Software:

xAct