Hostname: page-component-6898cfcb55-w5hgh Total loading time: 0 Render date: 2026-11-11T06:32:34.131Z Has data issue: false hasContentIssue false

Recurrence and pressure for group extensions

Published online by Cambridge University Press:  11 August 2014

JOHANNES JAERISCH*
Affiliation:
Department of Mathematics, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan email jaerisch@cr.math.sci.osaka-u.ac.jp
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

We investigate the thermodynamic formalism for recurrent potentials on group extensions of countable Markov shifts. Our main result characterizes recurrent potentials depending only on the base space, in terms of the existence of a conservative product measure and a homomorphism from the group into the multiplicative group of real numbers. We deduce that, for a recurrent potential depending only on the base space, the group is necessarily amenable. Moreover, we give equivalent conditions for the base pressure and the skew product pressure to coincide. Finally, we apply our results to analyse the Poincaré series of Kleinian groups and the cogrowth of group presentations.

Information

Type
Research Article
Copyright
© Cambridge University Press, 2014