Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-10-17
Proceedings of the International Conference on Stellar Dynamics: Classical to Modern, 21-27 August 2000, St. Petersburg State
Astronomy and Astrophysics
Astrophysics
an invited talk at The International Conference on Stellar Dynamics: From Classical to Modern, Sobolev Astronomical Institute,
Scientific paper
This talk summarises what is currently understood about the phenomenon that has come to be known as {\it chaotic mixing}. The first part presents a concise statement as to what chaotic mixing actually is, and then explains why it should be important in galactic dynamics. The second discusses in detail what is currently known, describing the manifestations of chaotic mixing both for flows in time-independent Hamiltonian systems and for systems subjected to comparatively weak time-dependent perturbations. The third part discusses what one might expect if one were to allow for a strongly time-dependent potential, including possible implications for violent relaxation.
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