Evolution of Liouville density of a chaotic system

Details Evolution of Liouville density of a chaotic system Evolution of Liouville density of a chaotic system

1995-05-31

arxiv.org/abs/chao-dyn/9505014v1

Nonlinear Sciences

Chaotic Dynamics

LaTeX 4 pages (27 kB) followed by four short PostScript files (2 kB + 2 kB + 1 kB + 4 kB)

Scientific paper

10.1103/PhysRevE.53.284

An area-preserving map of the unit sphere, consisting of alternating twists and turns, is mostly chaotic. A Liouville density on that sphere is specified by means of its expansion into spherical harmonics. That expansion initially necessitates only a finite number of basis functions. As the dynamical mapping proceeds, it is found that the number of non-negligible coefficients increases exponentially with the number of steps. This is to be contrasted with the behavior of a Schr\"odinger wave function which requires, for the analogous quantum system, a basis of fixed size.

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