Spontaneous Circulation in Ground-State Spinor Dipolar Bose-Einstein Condensates

Yuki Kawaguchi, Hiroki Saito, and Masahito Ueda
Phys. Rev. Lett. 97, 130404 – Published 28 September 2006

Abstract

We report on a study of the spin-1 ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interactions. By solving the nonlocal Gross-Pitaevskii equations for this system, we find three ground-state phases. Moreover, we show that a substantial orbital angular momentum accompanied by chiral symmetry breaking emerges spontaneously in a certain parameter regime. We predict that all these phases can be observed in the spin-1 Rb87 condensate by changing the number of atoms or the trap frequency.

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  • Received 12 June 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.130404

©2006 American Physical Society

Authors & Affiliations

Yuki Kawaguchi1, Hiroki Saito2, and Masahito Ueda1,3

  • 1Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
  • 2The University of Electro-Communications, 1-5-1, Choufugaoka, Choufu-shi, Tokyo 182-8585, Japan
  • 3Macroscopic Quantum Control Project, ERATO, JST, Bunkyo-ku, Tokyo 113-8656, Japan

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Issue

Vol. 97, Iss. 13 — 29 September 2006

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