Correspondence in Quasiperiodic and Chaotic Maps: Quantization via the von Neumann Equation

Details Correspondence in Quasiperiodic and Chaotic Maps: Quantization via the von Neumann Equation Correspondence in Quasiperiodic and Chaotic Maps: Quantization via the von Neumann Equation

1993-11-16

arxiv.org/abs/chao-dyn/9311003v1

Nonlinear Sciences

Chaotic Dynamics

36 pages, RevTex preprint format

Scientific paper

10.1103/PhysRevE.49.1968

A generalized approach to the quantization of a large class of maps on a torus, i.e. quantization via the von Neumann Equation, is described and a number of issues related to the quantization of model systems are discussed. The approach yields well behaved mixed quantum states for tori for which the corresponding Schrodinger equation has no solutions, as well as an extended spectrum for tori where the Schrodinger equation can be solved. Quantum-classical correspondence is demonstrated for the class of mappings considered, with the Wigner-Weyl density $\rho(p,q,t)$ going to the correct classical limit. An application to the cat map yields, in a direct manner, nonchaotic quantum dynamics, plus the exact chaotic classical propagator in the correspondence limit.

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