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学術論文

Stroboscopic prethermalization in weakly interacting periodically driven systems

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1507.00991.pdf
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PhysRevE.93.012130.pdf
(出版社版), 284KB

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引用

Canovi, E., Kollar, M., & Eckstein, M. (2016). Stroboscopic prethermalization in weakly interacting periodically driven systems. Physical Review E, 93(1):. doi:10.1103/PhysRevE.93.012130.


引用: https://hdl.handle.net/11858/00-001M-0000-0028-3098-6
要旨
Time-periodic driving provides a promising route toward engineering nontrivial states in quantum many-body systems. However, while it has been shown that the dynamics of integrable, noninteracting systems can synchronize with the driving into a nontrivial periodic motion, generic nonintegrable systems are expected to heat up until they display a trivial infinite-temperature behavior. In this paper we show that a quasiperiodic time evolution over many periods can also emerge in weakly interacting systems, with a clear separation of the timescales for synchronization and the eventual approach of the infinite-temperature state. This behavior is the analog of prethermalization in quenched systems. The synchronized state can be described using a macroscopic number of approximate constants of motion. We corroborate these findings with numerical simulations for the driven Hubbard model.