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Noncommutative scalar field minimally coupled to gravity

Orfeu Bertolami
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Abstract

A model for noncommutative scalar fields coupled to gravity based on the generalization of the Moyal product is proposed. Solutions compatible with homogeneous and isotropic flat Robertson-Walker spaces to first non-trivial order in the perturbation of the star-product are presented. It is shown that in the context of a typical chaotic inflationary scenario, at least in the slow-roll regime, noncommutativity yields no observable effect.

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Orfeu Bertolami. 2005-01-19. Noncommutative scalar field minimally coupled to gravity. https://doi.org/10.1142/s0217732305017810

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