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Atomic number fluctuations in a mixture of two spinor condensates | | Jie Zhang
; Z. F. Xu
; L. You
; Yunbo Zhang
; | | Date: |
15 Jul 2010 | | Abstract: | We study particle number fluctuations in the quantum ground states of a
mixture of two spin-1 atomic condensates when the interspecies spin-exchange
coupling interaction $c_{12}eta$ is adjusted. The two spin-1 condensates
forming the mixture are respectively ferromagnetic and polar in the absence of
an external magnetic (B-) field. We categorize all possible ground states using
the angular momentum algebra and compute their characteristic atom number
fluctuations, focusing especially on the the AA phase (when $ c_{12}eta >0$),
where the ground state becomes fragmented and atomic number fluctuations
exhibit drastically different features from a single stand alone spin-1 polar
condensate. Our results are further supported by numerical simulations of the
full quantum many-body system. | | Source: | arXiv, 1007.2568 | | Services: | Forum | Review | PDF | Favorites | |
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