3 papers
cond-mat.quant-gas2009★ 54 cited
Critical velocity of superfluid flow through single barrier and periodic potentials
Gentaro Watanabe, F. Dalfovo, F. Piazza +2
We investigate the problem of an ultracold atomic gas in the superfluid phase flowing in the presence of a potential barrier or a periodic potential. We use a hydrodynamic scheme i…
cond-mat.supr-con2008★ 23 cited
Equation of state and effective mass of the unitary Fermi gas in a 1D periodic potential
Gentaro Watanabe, Giuliano Orso, Franco Dalfovo +2
By solving the Bogoliubov -- de Gennes equations at zero temperature, we study the effects of a one-dimensional optical lattice on the behavior of a superfluid Fermi gas at unitari…
cond-mat.supr-con2008★ 52 cited
Solitons in two-dimensional Bose-Einstein condensates
Shunji Tsuchiya, Franco Dalfovo, Lev P. Pitaevskii
The excitations of a two-dimensional (2D) Bose-Einstein condensate in the presence of a soliton are studied by solving the Kadomtsev-Petviashvili equation which is valid when the v…