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Barrier induced chaos in kicked rotor : classical sub-diffusion and quantum localization

Authors
  • Paul, Sanku
  • Pal, Harinder
  • Santhanam, M. S.
Type
Published Article
Publication Date
Apr 29, 2016
Submission Date
Mar 18, 2016
Identifiers
DOI: 10.1103/PhysRevE.93.060203
Source
arXiv
License
Yellow
External links

Abstract

The relation between classically chaotic dynamics and quantum localization is studied in a system that violates the assumptions of Kolmogorov-Arnold-Moser (KAM) theorem, namely, kicked rotor in a discontinuous potential barrier. We show that the discontinuous barrier induces chaos and more than two distinct sub-diffusive energy growth regimes, the latter being an unusual feature for Hamiltonian chaos. We show that the dynamical localization in the quantized version of this system carries the imprint of non-KAM classical dynamics through the dependence of quantum break time on sub-diffusion exponents. We briefly comment on the experimental feasibility of this system.

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