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Trace Asymptotics for C*-Algebras from Smale Spaces

By D. Brady Killough and Ian F. Putnam


We consider C*-algebras associated with stable and unstable equivalence in hyperbolic dynamical systems known as Smale spaces. These systems include shifts of finite type, in which case these C*-algebras are both AF-algebras. These algebras have fundamental representations on a single Hilbert space (subject to a choice of periodic points) which have a number of special properties. In particular, the product between any element of the first algebra with one from the second is compact. In addition, there is a single unitary operator which implements actions on both. Here, under the hypothesis that the system is mixing, we show that the (semi-finite) traces on these algebras may be obtained through a limiting process and the usual operator trace

Topics: Mathematics - Dynamical Systems, Mathematics - Operator Algebras, 37D20 (Primary) 46L55, 46L51 (Secondary)
Year: 2012
OAI identifier: oai:arXiv.org:1208.5013

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