Moyal Planes are Spectral Triples
V. Gayral, J. M. Gracia-Bondía, B. Iochum, T. Schücker, J. C. Varilly
Abstract
Axioms for nonunital spectral triples, extending those introduced in the unital case by Connes, are proposed. As a guide, and for the sake of their importance in noncommutative quantum field theory, the spaces 2N endowed with Moyal products are intensively investigated. Some physical applications, such as the construction of noncommutative Wick monomials and the computation of the Connes--Lott functional action, are given for these noncommutative hyperplanes.
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