A binary mixture of spinor atomic Bose-Einstein condensates

Details A binary mixture of spinor atomic Bose-Einstein condensates A binary mixture of spinor atomic Bose-Einstein condensates

2009-01-12

arxiv.org/abs/0901.1505v1

Phys. Rev. A 79, 023613 (2009)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.79.023613

We study the ground state and classify its phase diagram for a mixture of two spin-1 condensates in the absence of external magnetic (B-) field according to atomic parameters for intra- and inter-species spin exchange coupling and singlet pairing interaction. Ignoring the inter-species singlet pairing interaction, the ground state phases are found analytically. Numerical approach of simulated annealing is adopted when the singlet pairing interaction is present. Our results on the phase diagram and the boundaries between phases allow for easy identifications of quantum phase transitions, that can be induced through the tuning of optical traps and atom numbers. They provide the first insight and guidance for several ongoing experiments on mixtures of spinor condensates.

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