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arXiv · 1209.1056

Spin-driven spatial symmetry breaking of spinor condensates in a double-well

Marina Melé-Messeguer·Simone Paganelli·Bruno Juliá-Díaz·Anna Sanpera·Artur Polls
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Abstract

The properties of an F=1 spinor Bose-Einstein condensate trapped in a double-well potential are discussed using both a mean-field two-mode approach and a simplified two-site Bose-Hubbard Hamiltonian. We focus in the region of phase space in which spin effects lead to a symmetry breaking of the system, favoring the spatial localization of the condensate in one well. To model this transition we derive, using perturbation theory, an effective Hamiltonian that describes N/2 spin singlets confined in a double-well potential.

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Marina Melé-Messeguer, Simone Paganelli, Bruno Juliá-Díaz, Anna Sanpera, Artur Polls. 2012-09-05. Spin-driven spatial symmetry breaking of spinor condensates in a double-well. https://doi.org/10.1103/physreva.86.053626

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