Untwisting twisted spectral triples

Authors

Magnus Goffeng
Bram Mesland
Adam C. Rennie, University of WollongongFollow

RIS ID

140064

Publication Details

Goffeng, M., Mesland, B. & Rennie, A. (2019). Untwisting twisted spectral triples. International Journal of Mathematics,

Abstract

2019 World Scientific Publishing Company. We examine the index data associated to twisted spectral triples and higher order spectral triples. In particular, we show that a Lipschitz regular twisted spectral triple can always be "logarithmically dampened" through functional calculus, to obtain an ordinary (i.e. untwisted) spectral triple. The same procedure turns higher order spectral triples into spectral triples. We provide examples of highly regular twisted spectral triples with nontrivial index data for which Moscovici's ansatz for a twisted local index formula is identically zero.