English

Short curves of end-periodic mapping tori

Geometric Topology 2024-08-14 v1

Abstract

Let SS be a boundaryless infinite-type surface with finitely many ends and consider an end-periodic homeomorphism ff of S. The end-periodicity of ff ensures that MfM_f, its associated mapping torus, has a compactification as a 33-manifold with boundary; further, if ff is atoroidal, then MfM_f admits a hyperbolic metric. Such maps admit invariant \emph{positive and negative Handel-Miller laminations}, Λ+\Lambda^+, Λ\Lambda^-, whose leaves naturally project to the arc and curve complex of a given compact subsurface YSY\subset S. As an end-periodic analogy to work of Minsky in the finite-type setting, we show that for every ϵ>0\epsilon>0 there exists K>0K> 0 (depending only on ϵ\epsilon and the \emph{capacity} of ff) for which dY(Λ+,Λ)Kd_Y (\Lambda^+, \Lambda^-)\geq K implies infσAH(Mf){σ(Y)}ϵ\inf_{\sigma\in \text{AH}(M_f)}\{\ell_\sigma(\partial Y)\} \leq \epsilon. Here σ(Y)\ell_\sigma (\partial Y) denotes the total geodesic length of Y\partial Y in (Mf,σ)(M_f, \sigma), and the infimum is taken over all hyperbolic structures on MfM_f. This work produces the following: given a closed surface Σ\Sigma, we provide a family of closed, fibered hyperbolic manifolds in which Σ\Sigma is totally geodesically embedded, (almost) transverse to the pseudo-Anosov flow, with arbitrarily small systole.

Keywords

Cite

@article{arxiv.2408.07044,
  title  = {Short curves of end-periodic mapping tori},
  author = {Brandis Whitfield},
  journal= {arXiv preprint arXiv:2408.07044},
  year   = {2024}
}