We study the Bose-Einstein condensate in the MIT double-well trap. We calculate the ground-state density profile of Na-23 atoms and the Bogoliubov spectrum of the elementary excitations as a 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.
Bose condensate in a double-well trap: Ground state and elementary excitations
SALASNICH, LUCA;
1999
Abstract
We study the Bose-Einstein condensate in the MIT double-well trap. We calculate the ground-state density profile of Na-23 atoms and the Bogoliubov spectrum of the elementary excitations as a 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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