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Stability of non-stationary states of spin-1 BECs | | H. Mäkelä
; M. Johansson
; M. Zelan
; E. Lundh
; | | Date: |
8 Sep 2011 | | Abstract: | The stability of non-stationary states of homogeneous spin-1 Bose-Einstein
condensates is studied by performing Bogoliubov analysis in a frame of
reference where the state is stationary. In particular, the effect of an
external magnetic field is examined. It is found that a non-zero magnetic field
introduces instability in a $^{23}$Na condensate. The wavelengths of this
instability can be controlled by tuning the strength of the magnetic field. In
a $^{87}$Rb condensate this instability is present already at zero magnetic
field. Furthermore, an analytical bound for the size of a stable condensate is
found and a condition for the validity of the single-mode approximation is
presented. Realization of the system in a toroidal trap is discussed and the
full time development is simulated. | | Source: | arXiv, 1109.1723 | | Services: | Forum | Review | PDF | Favorites | |
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