15-20 June 2014
Laurentian University / Université Laurentienne
America/Toronto timezone
Welcome to the 2014 CAP Congress! / Bienvenue au congrès de l'ACP 2014!

Spin transport in a unitary Fermi gas

18 Jun 2014, 08:30
FA-054+5+6 (Laurentian University / Université Laurentienne)


Laurentian University / Université Laurentienne

Sudbury, Ontario
Invited Speaker / Conférencier invité Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) (W1-6) Cold Atoms and Molecules - DAMOPC-DCMMP / Atomes froids et molécules - DPAMPC-DPMCM


Prof. Joseph Thywissen (University of Toronto)


The thermodynamic properties of unitary Fermi gases are called universal, since they do not depend on the strength or physical origin of their interactions. For the same reason, one might expect dynamics to be universal. We report on the growth of interactions and the loss of magnetization in a gas initialized with full transverse magnetization. Such a gas has no interaction energy, since each atom is in the same superposition of magnetic eigenstates. However, in the presence of a magnetic field gradient, this is a non-equilibrium state, and relaxes to an unmagnetized, fully interacting state, at higher temperature. We present our measurements of these dynamics, and discuss implications for our understanding of the unitary Fermi gas.

Primary author

Prof. Joseph Thywissen (University of Toronto)

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