Generic Regularities in Quasienergy Spectra and Free Quantum Dynamics Independently of Chaos Strength

I. Dana

Research output: Working paper / PreprintPreprint

Abstract

Generic and significant regularities are shown to occur in the quasienergy spectra of the generalized quantum kicked particle for arbitrary quasimomentum, a quantity most relevant in atom-optics experimental realizations of this paradigmatic nonintegrable system. The spectral regularities are basically different from the usual ones associated with ordered regions in a mixed phase space, since they are completely independent of the chaos strength. Their origin are free-motion features unaffected by the nonintegrability. The generic regularities are dense subspectra, each being either a regular level sequence with approximately a Poisson level-spacing distribution or a ladder of equally-spaced levels. The quantum dynamics associated with each regular subspectrum is essentially free for arbitrarily strong chaos.
Original languageEnglish
Number of pages5
StatePublished - 31 May 2012

Publication series

NamePhysics Archive

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