Heating suppression by long-range interactions in periodically driven spin chains

Devendra Singh Bhakuni, Lea F. Santos, Yevgeny Bar Lev

Research output: Working paper/PreprintPreprint

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Abstract

We propose a mechanism to suppress heating in periodically driven many-body quantum systems by employing sufficiently long-range interactions and experimentally relevant initial conditions. The mechanism is robust to local perturbations and does \emph{not} rely on disorder or high driving frequencies. Instead, it makes use of an approximate fragmentation of the many-body spectrum of the non-driven system into bands, with band gaps that grow with the system size. We show that when these systems are driven, there is a regime where \emph{decreasing} the driving frequency \emph{decreases} heating and entanglement build-up. This is demonstrated numerically for a prototypical system of spins in one dimension, but the results can be readily generalized to higher dimensions.
Original languageEnglish GB
StatePublished - 1 May 2021

Publication series

Namearxiv math.dis-nn

Keywords

  • Condensed Matter - Disordered Systems and Neural Networks

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