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Ultracold bosons in synthetic gauge potentials

Speaker: 
Kush Saha (IACS Kolkata, India)
Date: 
Fri, 03/05/2013 - 12:00pm to 1:00pm
Location: 
S13-M01-11 (Physics Conference Room)
Host: 
Shaffique Adam
Event Type: 
Seminars

Abstract

After a brief introduction of the ideas of experimental generation of synthetic gauge fields, I shall talk about the physics of interacting bosons in their presence. In particular, I shall discuss superfluid-Mott insulator (SI) transitions in a two dimensional square lattice at commensurate filling and in the presence of a synthetic periodic vector potential characterized by tunable strength p and period q. I shall then show the p and q dependence of the momentum distribution of the bosons in the Mott phases near the SI transitions and demonstrate that the bosons exhibit several reentrant field-induced SI transitions for any fixed period q. Finally I will comment on the superfluid density of the resultant superfluid state near such a SI transition.

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