Fell bundles and Haagerup properties

Abstract

We introduce new properties of Haagerup-type for Fell bundles over discrete groups and discuss their relationship with Haagerup properties for the associated $C^{\ast }$-algebras. In particular, our results on Fell bundles associated with twisted unital $C^{\ast }$-dynamical systems extend previous results known in the untwisted case.

28 pages. Comments welcome