Theoretical Physics Colloquium
Cold Atomic Gases and the Quest for Polarized Superfluids
by Prof. Carlos J. Bolech (University of Cincinnati, Ohio, USA)
Tuesday, March 6, 2012
from
to
(Asia/Kolkata)
at Colaba Campus ( AG69 )
at Colaba Campus ( AG69 )
Description |
Ongoing experimental efforts on systems of trapped cold atomic gases are aimed at studying the effects of polarization on superfluid pairing. Two different experimental groups encountered qualitative discrepancies which were a function of the confining geometry and the cooling protocol when studying 3D clouds of such gases. Looking instead at gases confined by a 2D optical lattice to move preferentially in one direction, the findings are consistent with the predictions for 1D systems of dilute polarized attractive gases. The measurements are in quantitative agreement with theoretical calculations (using a wide array of numerical and analytic techniques) in which a partially polarized phase is found to be the 1D analogue of the so called Fulde-Ferrell or Larkin-Ovchinnikov states. I will close with a discussion of ideas for testing the stability and probing further these strongly interacting systems. |