Nonlinear Sciences – Chaotic Dynamics
Scientific paper
1998-12-03
Phys. Rev. E 59, 6609 (1999).
Nonlinear Sciences
Chaotic Dynamics
20 pages, 11 figures
Scientific paper
10.1103/PhysRevE.59.6609
The phenomenon of periodic orbit scarring of eigenstates of classically chaotic systems is attracting increasing attention. Scarring is one of the most important "corrections" to the ideal random eigenstates suggested by random matrix theory. This paper discusses measures of scars and in so doing also tries to clarify the concepts and effects of eigenfunction scarring. We propose a new, universal scar measure which takes into account an entire periodic orbit and the linearized dynamics in its vicinity. This measure is tuned to pick out those structures which are induced in quantum eigenstates by unstable periodic orbits and their manifolds. It gives enhanced scarring strength as measured by eigenstate overlaps and inverse participation ratios, especially for longer orbits. We also discuss off-resonance scars which appear naturally on either side of an unstable periodic orbit.
Heller Eric J.
Kaplan Leah
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