English

Pseudo-Anosov flows on hyperbolic L-spaces

Geometric Topology 2025-06-12 v2 Dynamical Systems Symplectic Geometry

Abstract

We prove that for each nNn\in\mathbb{N} there is a hyperbolic L-space with nn pseudo-Anosov flows, no two of which are orbit equivalent. These flows have no perfect fits and are thus quasigeodesic. In addition, our flows admit positive Birkhoff sections, which we argue implies that they give rise to nn universally tight contact structures whose lifts to any finite cover are non-contactomorphic. This argument involves cylindrical contact homology together with the work of Barthelm\'e, Frankel, and Mann on the reconstruction of pseudo-Anosov flows from their closed orbits. These results answer more general versions of questions posed by Calegari and by Min and Nonino.

Keywords

Cite

@article{arxiv.2505.21113,
  title  = {Pseudo-Anosov flows on hyperbolic L-spaces},
  author = {John A. Baldwin and Steven Sivek and Jonathan Zung},
  journal= {arXiv preprint arXiv:2505.21113},
  year   = {2025}
}

Comments

19 pages, 5 figures. v2: added Theorem 1.8, other minor changes throughout

R2 v1 2026-07-01T02:42:46.732Z