The spin evolution of spin-3 $^{52}$Cr Bose-Einstein condensate

Details The spin evolution of spin-3 $^{52}$Cr Bose-Einstein condensate The spin evolution of spin-3 $^{52}$Cr Bose-Einstein condensate

2009-08-19

arxiv.org/abs/0908.2781v1

Physics

Condensed Matter

Quantum Gases

5 pages, 3 figures

Scientific paper

The spin evolution of a Bose-Einstein condensate starting from a mixture of two or three groups of $^{52}$Cr (spin-3) atoms in an optical trap has been studied theoretically. The initial state is so chosen that the system does not distinguish up and down. In this choice, the deviation caused by the single-mode approximation is reduced. Moreover, since the particle number is given very small (N=20), the deviation caused by the neglect of the long-range dipole force is also reduced. Making use of these two simplifications, a theoretical calculation beyond the mean field theory is performed. The numerical results are help to evaluate the unknown strength $g_0$.

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