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. [Phys. Rev. Lett. 85, 2413 (2000)].
Dynamics of two colliding Bose-Einstein condensates in an elongated magneto-static trap / M. MODUGNO; F. DALFOVO; C. FORT; P. MADDALONI; F. MINARDI. - In: PHYSICAL REVIEW A, GENERAL PHYSICS. - ISSN 0556-2791. - STAMPA. - 62:(2000), pp. 063607-1-063607-8.
Dynamics of two colliding Bose-Einstein condensates in an elongated magneto-static trap
MODUGNO, MICHELE;FORT, CHIARA;
2000
Abstract
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. [Phys. Rev. Lett. 85, 2413 (2000)].I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.