Worldline approach to noncommutative field theory

Details Worldline approach to noncommutative field theory Worldline approach to noncommutative field theory

2012-04-04

arxiv.org/abs/1204.1013v1

Physics

High Energy Physics

High Energy Physics - Theory

15 pages

Scientific paper

The study of the heat-trace expansion in noncommutative field theory has shown the existence of Moyal nonlocal Seeley-DeWitt coefficients which are related to the UV/IR mixing and manifest, in some cases, the non-renormalizability of the theory. We show that these models can be studied in a worldline approach implemented in phase space and arrive to a master formula for the $n$-point contribution to the heat-trace expansion. This formulation could be useful in understanding some open problems in this area, as the heat-trace expansion for the noncommutative torus or the introduction of renormalizing terms in the action, as well as for generalizations to other nonlocal operators.

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