Suppression of Heating in Quantum Spin Clusters under Periodic Driving as a Dynamic Localization Effect

Kai Ji, Boris V. Fine

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    14 Citations (Scopus)

    Abstract

    We investigate numerically and analytically the heating process in ergodic clusters of interacting spins 1/2 subjected to periodic pulses of an external magnetic field. Our findings indicate that there is a threshold for the pulse strength below which the heating is suppressed. This threshold decreases with the increase of the cluster size, approaching zero in the thermodynamic limit, yet it should be observable in clusters with fairly large Hilbert spaces. We obtain the above threshold quantitatively as a condition for the breakdown of the golden rule in the second-order perturbation theory. It is caused by the phenomenon of dynamic localization.

    Original languageEnglish
    Article number050602
    JournalPhysical Review Letters
    Volume121
    Issue number5
    DOIs
    Publication statusPublished - 3 Aug 2018

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