Poincaré profiles of groups and spaces

Abstract

We introduce a spectrum of monotone coarse invariants for metric measure spaces called Poincaré profiles. The two extremes of this spectrum determine the growth of the space, and the separation profile as defined by Benjamini--Schramm--Timár. In this paper we focus on properties of the Poincaré profiles of groups with polynomial growth, and of hyperbolic spaces, where we deduce a connection between these profiles and conformal dimension. As applications, we use these invariants to show the non-existence of coarse embeddings in a variety of examples.

55 pages. To appear in Revista Matemática Iberoamericana

Cited by in corpus (5)

• Connectivity constrains quantum codes
• Poincaré profiles of Lie groups and a coarse geometric dichotomy
• Hyperbolic groups with logarithmic separation profile
• Coarse entropy of metric spaces
• On the logarithmic coarse structures of Lie groups and hyperbolic spaces