Self-trapping of a dipolar Bose-Einstein condensate in a double well

S. K. Adhikari
Phys. Rev. A 89, 043609 – Published 14 April 2014

Abstract

We study the Josephson oscillation and self-trapping dynamics of a cigar-shaped dipolar Bose-Einstein condensate of 52Cr atoms polarized along the symmetry axis of an axially symmetric double-well potential using the numerical solution of a mean-field model, for dominating repulsive contact interaction (large positive scattering length a) over an anisotropic dipolar interaction. Josephson-type oscillation emerges for small and very large numbers of atoms, whereas self-trapping is noted for an intermediate number of atoms. The dipolar interaction pushes the system away from self-trapping towards Josephson oscillation. We consider a simple two-mode description for a qualitative understanding of the dynamics.

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  • Received 11 December 2013

DOI:https://doi.org/10.1103/PhysRevA.89.043609

©2014 American Physical Society

Authors & Affiliations

S. K. Adhikari*

  • Instituto de Física Teórica, UNESP–Universidade Estadual Paulista, 01.140-070 São Paulo, São Paulo, Brazil

  • *adhikari@ift.unesp.br; http://www.ift.unesp.br/users/adhikari

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Vol. 89, Iss. 4 — April 2014

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