Atoms at Resonance: Scattering and losses of a Bose gas at unitarity

Speaker: 
Andrew Grier, Ecole Normale Superieure, Laboratoire Kastler Brossel
Event Date and Time: 
Fri, 2013-12-06 11:00 - 12:00
Location: 
Henn 318
Local Contact: 
Kirk Madison
Intended Audience: 
Graduate

Tunability of the two-body scattering properties in ultracold atomic gases has proven to be a powerful tool in recent years, providing the first direct experimental evidence of long-predicted Efimov states and allowing for quantum simulation of unreachable or computationally intractable systems.  In this talk, we will review recent experimental and theoretical results centered around ultracold atomic Bose gases taken close to a scattering resonance where the two-body scattering cross-section diverges.  We will focus on measurements of the decay of a non-degenerate gas both at and in the vicinity of the scattering resonance due to three-body recombination processes.  We will present a theoretical framework for understanding the rate of these events based on universal Efimovian physics, and use this theory to explore how one might stabilize a unitary Bose gas.

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