Affordable Access

Access to the full text

Boundary distance, lens maps and entropy of geodesic flows of Finsler metrics

Authors
  • Burago, Dmitri
  • Ivanov, Sergei
Type
Published Article
Publication Date
Nov 03, 2014
Submission Date
May 25, 2014
Identifiers
DOI: 10.2140/gt.2016.20.469
Source
arXiv
License
Yellow
External links

Abstract

We show that a small perturbation of the boundary distance function of a simple Finsler metric on the $n$-disc is also the boundary distance function of some Finsler metric. (Simple metric form an open class containing all flat metrics.) The lens map is map that sends the exit vector to the entry vector as a geodesic crosses the disc. We show that a small perturbation of a lens map of a simple Finsler metric is in its turn the lens map of some Finsler metric. We use this result to construct a smooth perturbation of the metric on the standard 4-dimensional sphere to produce positive metric entropy of the geodesic flow. Furthermore, this flow exhibits local generation of metric entropy, that is positive entropy is generated in arbitrarily small tubes around one trajectory.

Report this publication

Statistics

Seen <100 times