Collective Excitations of Bose-Einstein Condensates in a Double-Well Potential

Details Collective Excitations of Bose-Einstein Condensates in a Double-Well Potential Collective Excitations of Bose-Einstein Condensates in a Double-Well Potential

2005-07-31

arxiv.org/abs/cond-mat/0508027v1

J. Phys. Soc. Jpn. 74, 3179 (2005)

Physics

Condensed Matter

Other Condensed Matter

14 pages, 6 figures

Scientific paper

10.1143/JPSJ.74.3179

We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.

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