Quantum Lunch Location:
T-Division Conference Room, TA-3,
Building 123, Room 121
Quantum Institute: Visitor Schedule
The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.
August 9, 2007
Thursday, 12:30PM to 2 PM
T-DO Conference Room, TA-3-123-121
University of Arizona
Spontaneous Formation of Vortices in Bose-Einstein Condensates
The spontaneous breaking of symmetries, often accompanying phase
transitions, is of fundamental importance across a wide range of
physical phenomena. In particular, for the Bose-Einstein condensation
phase transition, it has been proposed that spontaneous symmetry
breaking processes may contribute to the creation and trapping of
topological defects, or quantized vortices, in the resulting condensate
. In an experiment at the University of Arizona, the basic mechanism
behind this process was studied by creating condensates in a triple-well
potential, and the resulting formation and trapping of vortices was
observed . In a more recent project, the spontaneous formation of
vortices in condensates created in harmonic and toroidal traps has now
also been observed, with both experimental and numerical results 
that are consistent with the Kibble-Zurek mechanism for topological
defect formation. The results of these experiments will be described in
 Anglin and Zurek, PRL 83, 1707 (1999).
 Scherer, Weiler, Neely, and Anderson, PRL 98, 110402 (2007).
 University of Arizona/University of Queensland collaboration.