The Chern character of semifinite spectral triples

Alan L. Carey, John Phillips, Adam Rennie, Fyodor A. Sukochev

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    In previouswork we generalised both the odd and even local index formula of Connes and Moscovici to the case of spectral triples for a *-subalgebra A of a general semifinite von Neumann algebra. Our proofs are novel even in the setting of the original theorem and rely on the introduction of a function valued cocycle (called the resolvent cocycle) which is 'almost' a (b;B)-cocycle in the cyclic cohomology of A. In this paper we show that this resolvent cocycle 'almost' represents the Chern character and assuming analytic continuation properties for zeta functions we show that the associated residue cocycle, which appears in our statement of the local index theorem does represent the Chern character.

    Original languageEnglish
    Pages (from-to)141-193
    Number of pages53
    JournalJournal of Noncommutative Geometry
    Volume2
    Issue number2
    DOIs
    Publication statusPublished - 2008

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