FLEET research seminar: Angular momentum of BCS–BEC fermionic superfluids with multiple quantised vortices

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Event Details

10 August 2017 at 2:00 pm – 10 August 2017 at 3:00 pm
G29, New Horizons Building
Open to:
Engineering; Science; Seminars & Workshops


Hear Bose-Einstein condensate research from University of Boulder Colorado regarding quantised vortices and superfluidity, key to dissipationless particle flow studied at FLEET.


Angular momentum of a Bose-Einstein condensate in the presence of a quantized vortex is known to be ℏ times the number of particles in the condensate. In the presence of a vortex of vorticity larger than 1, the angular momentum is then ℏ times the vorticity times the number of particles. This obviously also works in the far BEC regime of the BCS-BEC fermionic superfluid with a vortex, where the angular momentum is ℏ times the vorticity times the number of bosonic molecules. I will discuss how this breaks down in the BCS regime of a fermionic superfluid with vortices of vorticity larger than 1, where the angular momentum turns out to be significantly lower than in the BEC regime.

Prof Victor Gurarie is Director of the Center for Theory of Quantum Matter at the University of Colorado Boulder, researching macroscopic quantum matter, unifying condensed matter, atomic, molecular and optical physics, nuclear physics and quantum information science.

Within FLEET, Prof Gurarie is working with Chris Vale (Swinburne University of Technology) to experimentally realise a quenched p-wave topological superfluid that generates self-sustained Floquet topological superfluidity with no external driving, and with Kris Helmerson (Monash University) on the quantum kicked-rotor setup to measure critical exponents in the quantum Hall effect.

For more information on FLEET events, please visit www.fleet.org.au/events

Dianne Ruka
FLEET: ARC Centre of Excellence in Future Low-Energy Electronics Technologies