BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Ariel Sommer\, Lehigh University\n\n
Transport properties provide an important tool to characterize many-body systems. In particular\, meas urements of spin transport in strongly interacting Fermi gases can help to resolve the debate regarding the existence of a pseudogap--a pairing gap above the superfluid critical temperature--in the unitary Fermi gas. Studi es of universal bounds on transport coefficients further motivate interest in spin transport in the unitary Fermi gas\, which is expected to exhibit timescales approaching the "\;Planckian"\; limit set by the tempe rature\, Boltzmann constant\, and Planck'\;s constant. I will describe proposed experiments to measure the spin transport coefficients in Fermi g ases at low temperatures that can address these questions. Our experimenta l approach utilizes a homogeneous Fermi gas separated into three regions: a sample and two reservoirs. Non-equilibrium initial conditions in the res ervoirs will drive a spin current through the sample\, enabling measuremen ts of the spin diffusivity. Our experimental approach can be extended to m easurements of heat transport and non-equilibrium states. \;
\n DTSTART:20190304T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:Spin Transport in Fermi Gases Across the Superfluid Transition END:VEVENT END:VCALENDAR