2005/07/31 by Jordi Mur-Petit, Montserrat Guilleumas, M. Guilleumas +7 · 1 citation
Physics and Astronomy · #Algorithm #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Quantum many-body systems #Quantum, superfluid, helium dynamics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physreva.73.013629
published as Physical Review A 73, 013629 (2006) · 6 pages + 5 figures; matches the published version (and corrects some typos there)
openalex publication_date 2006/01/31 · arxiv created 2006/03/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.