English

On the possible temperatures for flows on an AF algebra

Operator Algebras 2020-11-26 v3

Abstract

We exhibit a unital simple mono-tracial AF algebra A with the property that for any compact set K of real numbers containing 0 there is a periodic flow on A such the set of possible inverse temperatures for that flow is K, and for each number in K the corresponding equilibrium state is unique.

Cite

@article{arxiv.2011.06377,
  title  = {On the possible temperatures for flows on an AF algebra},
  author = {Klaus Thomsen},
  journal= {arXiv preprint arXiv:2011.06377},
  year   = {2020}
}

Comments

v3: Formulation of Remark 3.2 and Lemma 3.4 corrected. 21 pages

R2 v1 2026-06-23T20:08:03.108Z