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AMO/QO LUNCH SEMINAR


"Quantum turbulence in trapped superfluid: a new window of opportunities"


Dr. Vanderlei Salvador Bagnato
Instituto de Física de São Carlos
Universidade de São Paulo, Brazil


ABSTRACT 

In this work we demonstrate the evolution of vortices distributions to turbulence during excitation of the trapped BEC. Observation of stable structures, including turbulence and granulation will be discussed. Self similar expansion with the occurrence of turbulence is associated with matter wave propagation. The energy spectrum is measured using expansion and identification of power like behavior is evident. Different characterization of the sample, including correlations measurements and others are presented. Similarities with speckle fields are discussed. Theoretical models for the observations have been done and many of the physical insights identified. The concept of spontaneous generation of Quantum Turbulence in BEC will be discussed. New perspective in this out of equilibrium quantum system are presented.


Wednesday, October 12, 2016
IQSE 578, 12:30 Noon
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

(Sandwiches, salad, and soda to be served at 12:00 noon)

Host: Dr. Vladislav Yakovlev