Spin-polarized fermions with p-wave interactions.

by Dr. Yair Margalit

Mit

at Condensed Matter Seminar

Mon, 09 Nov 2020, 11:30
Zoom

Abstract

We report on the highest densities achieved with ultracold Fermi gases, by combining sympathetic cooling with tight compression of lithium-6 atoms in an optical potential. We observe elastic and inelastic p-wave collisions far away from any Feshbach resonance. We realize p-wave evaporation that reach a temperature of T/TF =0.42, partially limited by the slow transfer of energy from high to low velocities through p-wave collisions. Via cross-dimensional thermalization, we obtain the first experimental measurement of a p-wave background scattering volume, determined to be Vp=(39 a0)3. We also find that p-wave dipolar relaxation creates a metastable mixture of the lowest and highest hyperfine states.

Reference: https://arxiv.org/abs/2009.05913

Join Zoom Meeting
https://us02web.zoom.us/j/88060120837?pwd=K3dXeDJzWjdsendueU1mWEFzdWpkQT09

Created on 12-10-2020 by Meidan, Dganit (dganit)
Updaded on 05-11-2020 by Meidan, Dganit (dganit)