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arXiv · 1508.03344

On the phase structure of driven quantum systems

Vedika Khemani·Achilleas Lazarides·Roderich Moessner·S. L. Sondhi
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Abstract

Clean and interacting periodically driven quantum systems are believed to exhibit a single, trivial "infinite-temperature" Floquet-ergodic phase. In contrast, here we show that their disordered Floquet many-body localized counterparts can exhibit distinct ordered phases delineated by sharp transitions. Some of these are analogs of equilibrium states with broken symmetries and topological order, while others - genuinely new to the Floquet problem - are characterized by order and non-trivial periodic dynamics. We illustrate these ideas in driven spin chains with Ising symmetry.

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Vedika Khemani, Achilleas Lazarides, Roderich Moessner, S. L. Sondhi. 2016-08-22. On the phase structure of driven quantum systems. https://doi.org/10.1103/physrevlett.116.250401

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