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Insulating BECs and other surprises in dipole-conserving systems

October 24, 2022 @ 9:00 am - 10:30 am

Quantum Matter Seminar

Speaker: Ethan Lake (MIT)

Title: Insulating BECs and other surprises in dipole-conserving systems

Abstract: I will discuss recent work on bosonic models whose dynamics conserves both total charge and total dipole moment, a situation which can be engineered in strongly tilted optical lattices. Related models have received significant attention recently for their interesting out-of-equilibrium dynamics, but analytic and numeric studies reveal that they also possess rather unusual ground states. I will focus in particular on a dipole-conserving variant of the Bose-Hubbard model, which realizes an unusual phase of matter that possesses a Bose-Einstein condensate, but which is nevertheless insulating, and has zero superfluid weight. Time permitting, I will also describe the physics of a regime in which these models spontaneously fracture into an exotic type of glassy state.



October 24, 2022
9:00 am - 10:30 am
Event Category:


Juven Wang