# Many-Body Dynamics and Gap Opening in Interacting Periodically Driven Systems.

@article{Kandelaki2018ManyBodyDA, title={Many-Body Dynamics and Gap Opening in Interacting Periodically Driven Systems.}, author={Ervand Kandelaki and Mark S. Rudner}, journal={Physical review letters}, year={2018}, volume={121 3}, pages={ 036801 } }

We study transient dynamics in a two-dimensional system of interacting Dirac fermions subject to a quenched drive with circularly polarized light. In the absence of interactions, the drive opens a gap at the Dirac point in the quasienergy spectrum, inducing nontrivial band topology. We investigate the dynamics of this gap opening process, taking into account the essential role of electron-electron interactions. Crucially, scattering due to interactions (1) induces dephasing, which erases memory…

## 12 Citations

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We show that Floquet engineering with circularly polarized light (CPL) can selectively split the valley degeneracy of a twisted multilayer graphene (TMG), and thus generate a controlled…

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