Entanglement dynamics following quantum quenches in Floquet topological insulators and quantum critical systems

Event Dates: 

Friday, February 3, 2017 - 10:30am

CTQM Seminar Type: 

  • CTQM Seminar

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

Aditi Mitra

Speaker Affiliation(s): 

NYU

Abstract, Event Details: 

Recent years have shown that entanglement is a useful way to characterize quantum many body systems, however concrete results only exist in one spatial dimension. In this talk I will present results for the dynamics of the entanglement entropy and entanglement spectra in two dimensional Floquet  Chern insulators realized by applying a time-periodic perturbation to graphene. I will show how the topological edge states manifest in the entanglement dynamics and highlight some surprising differences between topological insulators realized from static Hamiltonians and those realized from time-periodic Hamiltonians. If time permits, I will also discuss entanglement dynamics following a critical quench in three spatial dimensions, and show how the underlying critical exponents manifest in the entanglement dynamics.

Research Category: