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.
To add your name to the Quantum Lunch email list, contact Ellie Vigil

Thursday, February 17, 2011
12:30 PM - 2:00 PM

Speaker: Mariusz Gajda (Polish Academy of Sciences)

Technical Host: Wojciech Zurek

TOPIC: Solitons as the early stage of quasicondensate formation during evaporative cooling

Abstract
We calculate the evaporative cooling dynamics of trapped one-dimensional Bose-Einstein condensates for parameters leading to a range of condensates and quasicondensates in the final equilibrium states. We confirm that solitons are created during the evaporation process, but finaly dissipate during thermalisation. The distance between solitons at the end of the evaporation ramp matches the coherence length in the final thermal state. Calculations were made using the classical fields method. They bridge the gap between the phase defect picture of the Kibble-Zurek mechanism and the long-wavelenth phase fluctuations in the thermal state.