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Physics Letters A

Symmetry breaking and a dynamical property of a dipolar Bose–Einstein condensate in a double-well potential

Yuansheng Wang, Zhen-Yu Li, Zhuwen Zhou, Xin-Feng Diao

Published Oct 30, 2013• 7 citations
Publisher
DOI
10.1016/j.physleta.2013.10.044

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We investigate the properties of a three-dimensional (3D) dipolar Bose–Einstein condensate (BEC) in a triple-well potential. Symmetry breaking and self-trapping (SBST) phenomena are demonstrated for 52Cr atoms in the 3D triple-well potential using numerical solutions of the Gross–Pitaevskii (GP) equation. The results show that the ground-state density distributions are affected markedly by the long-range nature and anisotropy of the dipolar interaction and the isotropic s-wave contact interaction. In addition, the dynamical picture of the SBST induced by a gradual transformation of the single-well potential into a triple-well one is also illustrated. SBST phenomena are also presented by adjusting the height of the middle potential well when the dipole orientation is aligned in the dipole axis.

Journal of the Physical Society of Japan•May 20, 2014•4 citations
We investigate the properties of a three-dimensional (3D) dipolar Bose–Einstein condensate (BEC) in a triple-well potential. Symmetry breaking and self-trapping (SBST) phenomena are demonstrated for 52Cr atoms in the 3D triple-well potential using numerical solutions of the Gross–Pitaevskii (GP) equation. The results show that the ground-state density distributions are affected markedly by the long-range nature and anisotropy of the dipolar interaction and the isotropic s-wave contact interaction. In addition, the dynamical picture of the SBST induced by a gradual transformation of the single-well potential into a triple-well one is also illustrated. SBST phenomena are also presented by adjusting the height of the middle potential well when the dipole orientation is aligned in the dipole axis.