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Asimptotic dimension and Novikov-Shubin invariants for open manifolds

D. Guido·T. Isola
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Abstract

A trace on the C^*-algebra A of quasi-local operators on an open manifold is described, based on the results in \cite{RoeOpen}. It allows a description `a la Novikov-Shubin \cite{NS2} of the low frequency behavior of the Laplace-Beltrami operator. The 0-th Novikov-Shubin invariant defined in terms of such a trace is proved to coincide with a metric invariant, which we call asymptotic dimension, thus giving a large scale ``Weyl asymptotics'' relation. Moreover, in analogy with the Connes-Wodzicki result \cite{CoCMP,Co,Wo}, the asymptotic dimension d measures the singular traceability (at 0) of the Laplace-Beltrami operator, namely we may construct a (type II_1) singular trace which is finite on the $^*$-bimodule over A generated by $Δ^{-d/2}$.

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BibTeXRIS

D. Guido, T. Isola. 1996-12-23. Asimptotic dimension and Novikov-Shubin invariants for open manifolds. https://arxiv.org/abs/dg-ga/9612015

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