Band distributions for quantum chaos on a torus

Itzhack Dana, Mario Feingold, Michael Wilkinson

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Abstract

Band distributions (BDs) are introduced describing quantization in a toral phase space. A BD is the uniform average of an eigenstate phase-space probability distribution over a band of toral boundary conditions. A general explicit expression for the Wigner BD is obtained. It is shown that the Wigner functions for all of the band eigenstates can be reproduced from the Wigner BD. Also, BDs are shown to be closer to classical distributions than eigenstate distributions. Generalized BDs, associated with sets of adjacent bands, are used to extend in a natural way the Chern-index characterization of the classical-quantum correspondence on the torus to arbitrary rational values of the scaled Planck constant.
Original languageEnglish
Pages (from-to)3124 -3127
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number15
DOIs
Publication statusPublished - 12 Oct 1998

Keywords

  • band distribution
  • torus
  • toral phase space
  • toral boundary
  • Wigner
  • Chern-index
  • quantum
  • quantum physics

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