Strongly Interacting Ultracold Fermi Gases

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• Dr Chris Bradly, U of Melbourne
• Thursday 11 October 2012, 13:45-15:00
• Theory Library.

If you have a question about this talk, please contact Dr Dimitri M Gangardt.

Over the last few years ultracold degenerate gases have attracted much interest due to their controllability and stability. Advances in tight confining harmonic traps and the use of magnetic fields and Feshbach resonances in controlling atomic collisions have made it possible to explore the strongly interacting BCS -BEC crossover regime. We analytically determine the properties of two and three interacting particles in a harmonic trap subject to a rotation or a uniform synthetic magnetic field, where the spherical symmetry of the relative Hamiltonian is preserved. These few-body results are used to calculate thermodynamic quantities such as the entropy and energy via the second order quantum cluster expansion. We find that in the strongly interacting regime the energy is universal, however the entropy changes as a function of the rotation or synthetic magnetic field strength.

This talk is part of the Theoretical Physics Seminars series.

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