Dynamics of F=1 87Rb condensates at finite temperatures

Details Dynamics of F=1 87Rb condensates at finite temperatures Dynamics of F=1 87Rb condensates at finite temperatures

2005-07-22

arxiv.org/abs/cond-mat/0507521v3

Physical Review A 73, 013629 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages + 5 figures; matches the published version (and corrects some typos there)

Scientific paper

10.1103/PhysRevA.73.013629

We investigate the dynamics of a F=1 spinor Bose-Einstein condensate of 87Rb atoms confined in a quasi-one-dimensional trap both at zero and at finite temperature. At zero temperature, we observe coherent oscillations between populations of the various spin components and the formation of multiple domains in the condensate. We study also finite temperature effects in the spin dynamics taking into account the phase fluctuations in the Bogoliubov-de Gennes framework. At finite T, despite complex multidomain formation in the condensate, population equipartition occurs. The length scale of these spin domains seems to be determined intrinsically by nonlinear interactions.

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