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Singular perturbation of symbolic dynamics via thermodynamic formalism

Published online by Cambridge University Press:  01 August 2008

TAKEHIKO MORITA
Affiliation:
Department of Mathematics, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739–8526, Japan (email: take@math.sci.hiroshima-u.ac.jp, hoxy-hd052710@hiroshima-u.ac.jp)
HARUYOSHI TANAKA
Affiliation:
Department of Mathematics, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739–8526, Japan (email: take@math.sci.hiroshima-u.ac.jp, hoxy-hd052710@hiroshima-u.ac.jp)

Abstract

We consider singular perturbation of a mixing subshift of finite type by means of thermodynamic formalism. In our formulation, the perturbed systems are described by a family of potentials {Φ(α,⋅)} with large parameter α on a fixed subshift of finite type, and the original (unperturbed) system is characterized as the system at infinity obtained by collapsing the perturbed system upon taking . We apply our formulation to the collapse of cookie-cutter systems and dispersing open billiards.

Type
Research Article
Copyright
Copyright © 2008 Cambridge University Press

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