The Schrödinger Cat family in attractive Bose gases

We show that the ground state of an attractive Bose gas in a double well evolves from a coherent state to a Schrodinger Cat like state as the tunneling barrier is decreased. The latter exhibits super fragmentation similar to the ground state of a spin-1 Bose gas with antiferromagnetic interactions....

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Bibliographic Details
Published in:Journal of low temperature physics 2004-05, Vol.135 (3-4), p.257-266
Main Authors: HO, T.-L, CIOBANU, C. V
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Matter waves
Physics
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Summary:We show that the ground state of an attractive Bose gas in a double well evolves from a coherent state to a Schrodinger Cat like state as the tunneling barrier is decreased. The latter exhibits super fragmentation similar to the ground state of a spin-1 Bose gas with antiferromagnetic interactions. We also show that the fragmented condensates of attractive and repulsive Bose gases in double wells lead to very different interference patterns.
ISSN:0022-2291
1573-7357
DOI:10.1023/B:JOLT.0000024552.87247.eb