Tunneling And The Onset Of Chaos In A Driven Bistable System

Details Tunneling And The Onset Of Chaos In A Driven Bistable System Tunneling And The Onset Of Chaos In A Driven Bistable System

1993-10-28

arxiv.org/abs/chao-dyn/9310006v1

Phys. Rev. E 49 (1994) 273-280

Nonlinear Sciences

Chaotic Dynamics

17 pages in REVTeX preprint format. A version with encapsulated Postscript figures included (via epsf) and GIF-images of wave

Scientific paper

10.1103/PhysRevE.49.273

We study the interplay between coherent transport by tunneling and diffusive transport through classically chaotic phase-space regions, as it is reflected in the Floquet spectrum of the periodically driven quartic double well. The tunnel splittings in the semiclassical regime are determined with high numerical accuracy, and the association of the corresponding doublet states to either chaotic or regular regions of the classical phase space is quantified in terms of the overlap of the Husimi distribution with the chaotic layer along the separatrix. We find a strong correlation between both quantities. They show an increase by orders of magnitude as chaotic diffusion between the wells starts to dominate the classical dynamics. We discuss semiclassical explanations for this correlation.

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