Quantum transport in strongly interacting Fermi gases

Add to your list(s) Download to your calendar using vCal

• Prof. Martin Zwierlein Massachusetts Institute of Technology, Cambridge MA, USA
• Wednesday 04 July 2018, 11:00-12:00
• Rutherford building, Seminar Room B.

If you have a question about this talk, please contact Dr Ulrich Schneider.

Understanding transport in strongly interacting systems of fermions is one of the outstanding challenges in many-body physics. There exist many open questions even on the qualitative features of such transport, whether it can be described by quasi-particles, whether heat, charge and spin are transported together or separately, and how transport properties change across phase transitions. I will present measurements of sound attenuation in strongly interacting, homogeneous Fermi gases, which reveal quantum limited sound diffusivity even in the superfluid regime. For Fermi gases in the Hubbard regime, observed under a microscope with single-atom resolution, we performed studies of spin transport in the Mott insulating regime, where charge is frozen but spins are free to diffuse. We obtain spin diffusivities revealing super-exchange scaling, with contributions from direct tunnelling of spins facilitated by doublon-hole fluctuations.

This talk is part of the AMOP list series.

This talk is included in these lists:

• AMOP list
• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Rutherford building, Seminar Room B
• School of Physical Sciences
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.