The confluence of fractured resonances at points of dynamical, many–body flare
arXiv (Cornell University)(2023)
Abstract
Resonant transport occurs when there is a matching of frequencies across some
spatial medium, increasing the efficiency of shuttling particles from one
reservoir to another. We demonstrate that in a periodically driven, many–body
titled lattice, there are sets of spatially fractured resonances. These
“emanate” from two essential resonances due to scattering off internal
surfaces created when the driving frequency and many–body interaction strength
vary, a scattering reminiscent of lens flare. The confluence of these fractured
resonances dramatically enhances transport. At one confluence, the interaction
strength is finite and the essential resonance arises due to the interplay of
interaction with the counter–rotating terms of the periodic drive. We discuss
the origin and structure of the fractured resonances, as well as the scaling of
the conductance with system parameters. These results furnish a new example of
the richness of open, driven, many–body systems.
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Key words
fractured resonances
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