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Kinetic energy of uniform Bose-Einstein condensate
E. E. Nikitin, L. P. Pitaevskii
The Bogoliubov theory of a uniform weakly-nonideal Bose-Einstein condensate leads to a divergent expression for the kinetic energy of atoms. However, the latter can be determined p…
New asymptotic behaviour of the surface-atom force out of thermal equilibrium
Mauro Antezza, Lev P. Pitaevskii, Sandro Stringari
The Casimir-Polder-Lifshitz force felt by an atom near the surface of a substrate is calculated out of thermal equilibrium in terms of the dielectric function of the material and o…
Sensitive measurement of forces at micron scale using Bloch oscillations of ultracold atoms
Iacopo Carusotto, Lev Pitaevskii, Sandro Stringari +2
We show that Bloch oscillations of ultracold fermionic atoms in the periodic potential of an optical lattice can be used for a sensitive measurement of forces at the micrometer len…
Formation of molecules near a Feshbach resonance in a 1D optical lattice
G. Orso, L. P. Pitaevskii, S. Stringari +1
We calculate the binding energy of two atoms interacting near a Feshbach resonance in the presence of a 1D periodic potential. The critical value of the scattering length needed to…