Bose Condensate in a Double-Well Trap: Ground State and Elementary Excitations
L. Salasnich, A. Parola, L. Reatto
Abstract
We study the Bose-Einstein condensate in the MIT double-well trap. We calculate the ground state density profile of 23Na atoms and the Bogoliubov spectrum of the elementary excitations as function of the strength of the double-well barrier. In particular, we analyze the behavior of quantum-mechanical collective excitations. Finally, we discuss the observability criteria for macroscopic quantum tunneling and macroscopic quantum self-trapping.
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