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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…
Effect of the Casimir-Polder force on the collective oscillations of a trapped Bose-Einstein condensate
Mauro Antezza, Lev P. Pitaevskii, Sandro Stringari
We calculate the effect of the interaction between an optically active material and a Bose-Einstein condensate on the collective oscillations of the condensate. We provide explicit…