Viscosity and Scale-Invariance in 2D and 3D Fermi Gases


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  • Speaker: Mohit Randeria, Ohio State University
  • Host Department: Physics
  • Date: 01/25/2013
  • Time: 4:00 PM - 5:00 PM

  • Location: 340 West Hall

  • Description:

    Transport in strongly interacting quantum systems is of great interest
    in diverse areas of physics — condensed matter, black holes and string
    theory, quark-gluon plasmas and cold atoms — which, at first sight,
    appear to have little in common. In this talk, I will focus on ultracold 
    Fermi gases across the BCS-BEC crossover where there has
    been an explosion of experimental and theoretical progress. I will
    discuss exact viscosity sum rules [1] that relate transport, spectroscopy 
    and thermodynamics, and their implications for the strongly interacting 
    unitary regime in 3D. I will conclude with new insights [2] into the 
    experimental observations of apparent scale invariance in 2D Fermi gases.

    [1] E.Taylor & M. Randeria, Phys. Rev. A 81, 053610 (2010)
    [2] E. Taylor & M. Randeria; Phys. Rev. Lett. 109, 135301 (2012)