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- W2994759904 abstract "We study the phenomenon of many-body localization (MBL) in an interacting system subjected to a combined DC as well as a square wave AC electric field. First, the condition for the dynamical coherent destruction of Wannier-Stark localization and super Bloch oscillations in the non-interacting limit, are obtained semi-classically. In the presence of interactions (and a confining/disordered potential), a static field alone leads to Stark many-body localization, for sufficiently large field strengths. We find that in the presence of an additional high-frequency AC field, there are two ways of maintaining the MBL intact: either by resonant drive where the ratio of amplitude to the frequency of the drive ($A/omega$) is tuned at the dynamical localization point of the non-interacting limit or by off-resonant drive. Remarkably, resonant drive with $A/omega$ tuned away from the dynamical localization point leads to a emph{coherent destruction of Stark-MBL}. Moreover, a pure (high-frequency) AC field can also give rise to the MBL phase if $A/omega$ is tuned at the dynamical localization point of the zero dc field problem." @default.
- W2994759904 created "2019-12-26" @default.
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- W2994759904 date "2019-12-19" @default.
- W2994759904 modified "2023-09-27" @default.
- W2994759904 title "Coherent destruction of Stark many-body localization" @default.
- W2994759904 hasPublicationYear "2019" @default.
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