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Collective oscillations of a trapped Fermi gas near a Feshbach resonance
Sandro Stringari
The frequencies of the collective oscillations of a harmonically trapped Fermi gas interacting with large scattering lengths are calculated at zero temperature using hydrodynamic t…
Momentum distribution of a trapped Fermi gas with large scattering length
L. Viverit, S. Giorgini, L. P. Pitaevskii +1
Using a scattering length parametrization of the BCS-BEC crossover as well as the local density approximation for the density profile, we calculate the momentum distribution of a h…
Dynamics of a classical gas including dissipative and mean field effects
P. Pedri, D. Guéry-Odelin, S. Stringari
By means of a scaling ansatz, we investigate an approximated solution of the Boltzmann-Vlasov equation for a classical gas. Within this framework, we derive the frequencies and the…
Bose-Einstein condensates in 1D optical lattices: compressibility, Bloch bands and elementary excitations
Meret Kraemer, Chiara Menotti, Lev Pitaevskii +1
We discuss the Bloch-state solutions of the stationary Gross-Pitaevskii equation and of the Bogoliubov equations for a Bose-Einstein condensate in the presence of a one-dimensional…
Violation of self-similarity in the expansion of a 1D Bose gas
P. Pedri, L. Santos, P. Ohberg +1
The expansion of a 1D Bose gas is investigated employing the Lieb-Liniger equation of state within the local density approximation. We show that during the expansion the density pr…