Nonequilibrium Floquet Steady States of Time-Periodic Driven Luttinger Liquids

Serena Fazzini, Piotr Chudzinski, Christoph Dauer, Imke Schneider, Sebastian Eggert

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Abstract

Time-periodic driving facilitates a wealth of novel quantum states and quantum engineering. The interplay of Floquet states and strong interactions is particularly intriguing, which we study using time-periodic fields in a one-dimensional quantum gas, modeled by a Luttinger liquid with periodically changing interactions. By developing a time-periodic operator algebra, we are able to solve and analyze the complete set of nonequilibrium steady states in terms of a Floquet-Bogoliubov ansatz and known analytic functions. Complex valued Floquet eigenenergies occur when integer multiples of the driving frequency approximately match twice the dispersion energy, which correspond to resonant states. In experimental systems of Lieb-Liniger bosons we predict a change from power-law correlations to dominant collective density wave excitations at the corresponding wave numbers as the frequency is lowered below a characteristic cutoff.
Original languageEnglish
Article number243401
Number of pages7
JournalPhysical Review Letters
Volume126
Issue number24
Early online date17 Jun 2021
DOIs
Publication statusPublished - 18 Jun 2021

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