Commutators and propagators of Moyal star-products and microcausality for free scalar field on noncommutative spacetime

Details Commutators and propagators of Moyal star-products and microcausality for free scalar field on noncommutative spacetime Commutators and propagators of Moyal star-products and microcausality for free scalar field on noncommutative spacetime

2006-01-08

arxiv.org/abs/hep-th/0601046v3

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, Latex, v2: some content added in section 4, v3: some references added

Scientific paper

We study the Moyal commutators and their expectation values between vacuum states and non-vacuum states for free scalar field on noncommutative spacetime. Then from the Moyal commutators, we find that the microcausality is satisfied for the linear operators of the free scalar field on noncommutative spacetime. We construct the Feynman propagator of Moyal star-product for noncommutative scalar field theory.

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