Construction of Gauge Theories on Curved Noncommutative Spacetime

Details Construction of Gauge Theories on Curved Noncommutative Spacetime Construction of Gauge Theories on Curved Noncommutative Spacetime

2003-09-15

arxiv.org/abs/hep-th/0309145v4

Nucl.Phys. B698 (2004) 473-502

Physics

High Energy Physics

High Energy Physics - Theory

35 pages, v2: references added, v3: PACS added, v4: final version, changes in the order of presentation

Scientific paper

10.1016/j.nuclphysb.2004.07.024

We present a method where derivations of star-product algebras are used to build covariant derivatives for noncommutative gauge theory. We write down a noncommutative action by linking these derivations to a frame field induced by a nonconstant metric. An example is given where the action reduces in the classical limit to scalar electrodynamics on a curved background. We further use the Seiberg-Witten map to extend the formalism to arbitrary gauge groups. A proof of the existence of the Seiberg-Witten-map for an abelian gauge potential is given for the formality star-product. We also give explicit formulas for the Weyl ordered star-product and its Seiberg-Witten-maps up to second order.

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