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cond-mat.supr-con2005★ 27 cited
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…
cond-mat.supr-con2005★ 27 cited
Quasi two-dimensional superfluid Fermi gases
J. -P. Martikainen, Paivi Torma
We study a quasi two-dimensional superfluid Fermi gas where the confinement in the third direction is due to a strong harmonic trapping. We investigate the behavior of such a syste…