How periodic driving heats a disordered quantum spin chain

Jorge Rehn; Achilleas Lazarides; Frank Pollmann; Roderich Moessner

doi:10.1103/physrevb.94.020201

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arXiv · 1603.03054

How periodic driving heats a disordered quantum spin chain

Jorge Rehn·Achilleas Lazarides·Frank Pollmann·Roderich Moessner

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Abstract

We study the energy absorption in real time of a disordered quantum spin chain subjected to coherent monochromatic periodic driving. We determine characteristic fingerprints of the well-known ergodic (Floquet-ETH for slow driving/weak disorder) and many-body localized (Floquet-MBL for fast driving/strong disorder) phases. In addition, we identify an intermediate regime, where the energy density of the system -- unlike the entanglement entropy a local and bounded observable -- grows logarithmically slowly over a very large time window.

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Jorge Rehn, Achilleas Lazarides, Frank Pollmann, Roderich Moessner. 2016-03-09. How periodic driving heats a disordered quantum spin chain. https://doi.org/10.1103/physrevb.94.020201

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