Transport in the Low Density Fermi Hubbard Model
Invited Talk
F Corapi1, R T Learn1, B Driesen1, A Lefebvre2, X Leyronas2, C J Fujiwara3,1, F Chevy2, J H Thywissen1
1 Department of Physics, University of Toronto, Toronto, Canada
2 Département de Physique de l'ENS, Laboratoire de Physique de l'ENS, Paris, France
3 Department of Physics, Lehigh University, Bethlehem PA, USA
Seminar: S6 — Physics of Cold Trapped Atoms and Ions
Thursday, 9 July 2026 · 14:00 – 14:25
Abstract
In this talk, I will present some theoretical work we have made that was motivated by experiments of the team of Joseph Thywissen in Toronto [1].
We have computed the ac conductivity of fermions in an optical lattice plus a parabolic trap. The method is based on the Boltzmann equation that is expected to be correct in a regime where the filling factor is small. We propose an Ansatz for the distribution function that enables to calculate the ac conductivity in a closed form. I will present the derivation of the formula and comparison to experiments.
References
- F Corapi, R T Learn, B Driesen, et al., arXiv: 2510.19395 (2025)