Article contents
The essential coexistence phenomenon in Hamiltonian dynamics
Published online by Cambridge University Press: 08 April 2021
Abstract
We construct an example of a Hamiltonian flow
$f^t$
on a four-dimensional smooth manifold
$\mathcal {M}$
which after being restricted to an energy surface
$\mathcal {M}_e$
demonstrates essential coexistence of regular and chaotic dynamics, that is, there is an open and dense
$f^t$
-invariant subset
$U\subset \mathcal {M}_e$
such that the restriction
$f^t|U$
has non-zero Lyapunov exponents in all directions (except for the direction of the flow) and is a Bernoulli flow while, on the boundary
$\partial U$
, which has positive volume, all Lyapunov exponents of the system are zero.
- Type
- Original Article
- Information
- Ergodic Theory and Dynamical Systems , Volume 42 , Issue 2: Anatole Katok Memorial Issue Part 1: Special Issue of Ergodic Theory and Dynamical Systems , February 2022 , pp. 592 - 613
- Copyright
- © The Author(s), 2021. Published by Cambridge University Press
Footnotes
Dedicated to the memory of Anatole Katok
References
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