We simulate several methods which could be realized in the laboratory to probe the band excitation energies and the momentum distribution of a Bose-Einstein condensate inside an optical lattice. The values of the excitation energies obtained by the different methods agree within the accuracy of the simulation. The meaning of the results in terms of density and phase deformations is tested by studying the relaxation of a phase-modulated condensate toward the ground state.
|Autori:||Chiofalo, MARIA LUISA; Succi, S; Tosi, Mp|
|Titolo:||Probing the energy bands of a Bose-Einstein condensate in an optical lattice|
|Anno del prodotto:||2001|
|Digital Object Identifier (DOI):||10.1103/PhysRevA.63.063613|
|Appare nelle tipologie:||1.1 Articolo in rivista|