39 citations · 64 across the 3 of their papers we have counts for
8 papers
Pairing based cooling of Fermi gases
M. J. Leskinen, J. Kinnunen, P. Torma
We propose a pairing-based method for cooling an atomic Fermi gas. A three component (labels 1, 2, 3) mixture of Fermions is considered where the components 1 and 2 interact and, f…
Fermion pairing with spin-density imbalance in an optical lattice
T. Koponen, J. Kinnunen, J. -P. Martikainen +2
We consider pairing in a two-component atomic Fermi gas, in a three-dimensional optical lattice, when the components have unequal densities, i.e. the gas is polarized. We show that…
Non-BCS superfluidity in trapped ultracold Fermi gases
L. M. Jensen, J. Kinnunen, P. Torma
Superconductivity and superfluidity of fermions require, within the BCS theory, matching of the Fermi energies of the two interacting Fermion species. Difference in the number dens…
Sound velocity and dimensional crossover in a superfluid Fermi gas in an optical lattice
T. Koponen, J. -P. Martikainen, J. Kinnunen +1
We study the sound velocity in cubic and non-cubic three-dimensional optical lattices. We show how the van Hove singularity of the free Fermi gas is smoothened by interactions and…
Beyond linear response spectroscopy of ultracold Fermi gases
J. Kinnunen, P. Torma
We study RF-spectroscopy of ultracold Fermi gas by going beyond the linear response in the field-matter interaction. Higher order perturbation theory allows virtual processes and e…
Signatures of superfluidity for Feshbach-resonant Fermi gases
J. Kinnunen, M. Rodriguez, P. Torma
We consider atomic Fermi gases where Feshbach resonances can be used to continuously tune the system from weak to strong interaction regime, allowing to scan the whole BCS-BEC cros…