Bose Condensate in a Double-Well Trap: Ground State and Elementary Excitations

Details Bose Condensate in a Double-Well Trap: Ground State and Elementary Excitations Bose Condensate in a Double-Well Trap: Ground State and Elementary Excitations

1999-08-10

arxiv.org/abs/cond-mat/9908146v1

Phys. Rev. A, vol. 60, 4171-4174 (1999)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures, to be published in Phys. Rev. A (Brief Report)

Scientific paper

10.1103/PhysRevA.60.4171

We study the Bose-Einstein condensate in the MIT double-well trap. We calculate the ground state density profile of $^{23}$Na 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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