Kibble-Zurek scaling in periodically driven quantum systems

Angelo Russomanno, Emanuele G. Dalla Torre

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21 Scopus citations

Abstract

We study the slow crossing of non-equilibrium quantum phase transitions in periodically driven systems. We explicitly consider a spin chain with a uniform time-dependent magnetic field and focus on the Floquet state that is adiabatically connected to the ground state of the static model. We find that this Floquet ground state undergoes a series of quantum phase transitions characterized by a non-trivial topology. To dynamically probe these transitions, we propose to start with a large driving frequency and slowly decrease it as a function of time. Combining analytical and numerical methods, we uncover a Kibble-Zurek scaling that persists in the presence of moderate interactions. This scaling can be used to experimentally demonstrate non-equilibrium transitions that cannot be otherwise observed.

Original languageEnglish
Article number30006
JournalEPL
Volume115
Issue number3
DOIs
StatePublished - Aug 2016

Bibliographical note

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© CopyrightEPLA, 2016.

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