Inner Fluctuations in Noncommutative Geometry without the first order condition

Abstract

We extend inner fluctuations to spectral triples that do not fulfill the first-order condition. This involves the addition of a quadratic term to the usual linear terms. We find a semi-group of inner fluctuations, which only depends on the involutive algebra A and which extends the unitary group of A. This has a key application in noncommutative spectral models beyond the Standard Model, of which we consider here a toy model.

22 pages, 2 figures

References in corpus (2)

• Why the Standard Model
• Resilience of the Spectral Standard Model

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