Physics – Condensed Matter
Scientific paper
2000-07-06
Phys. Rev. A 62, 063607 (2000)
Physics
Condensed Matter
8 pages, 7 figures, RevTex
Scientific paper
10.1103/PhysRevA.62.063607
We study the dynamics of two interacting Bose-Einstein condensates, by numerically solving two coupled Gross-Pitaevskii equations at zero temperature. We consider the case of a sudden transfer of atoms between two trapped states with different magnetic moments: the two condensates are initially created with the same density profile, but are trapped into different magnetic potentials, whose minima are vertically displaced by a distance much larger than the initial size of both condensates. Then the two condensates begin to perform collective oscillations, undergoing a complex evolution, characterized by collisions between the two condensates. We investigate the effects of their mutual interaction on the center-of-mass oscillations and on the time evolution of the aspect ratios. Our theoretical analysis provides a useful insight into the recent experimental observations by Maddaloni et al., cond-mat/0003402.
Dalfovo Franco
Fort Chiara
Maddaloni P.
Minardi Francesco
Modugno Marco
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