Dear Friends,
On Thursday, January 31st, there will be an ITAMP topical lunch discussion.
Tea Room (P-226) @ CfA (60 Garden Street)
Time: 12:00-1:30
As always pizza will be served.
Speaker: Matthias Punk
Title: Mobile impurity near the superfluid-Mott insulator transition in
two dimensions
Abstract:
In this talk I'm going to discuss transport properties of an impurity atom
coupled to bosons in a 2d optical lattice at integer filling near the
superfluid-Mott insulator transition. Calculating transport coefficients
near quantum critical points remains a challenging problem in theoretical
condensed matter physics, and I will start the talk by giving an overview
of the basic problems and open questions in this field. After that I'm
going to focus on the impurity diffusion constant, which can be measured
directly in experiments with quantum gas microscopes, and which exhibits
some unexpected properties near the superfluid-Mott insulator critical
point.
Looking forward to seeing you there,
Charles Mathy
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