Dark Solitons in F=1 Spinor Bose-Einstein Condensate(General)

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概要

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• We study dark soliton solutions of a multi-component Gross-Pitaevskii equation for hyperfine spin F=1 spinor Bose-Einstein condensate. The interactions are supposed to be inter-atomic repulsive and anti-ferromagnetic ones of equal magnitude. The solutions are obtained from those of an integrable 2×2 matrix nonlinear Schrodinger equation with nonvanishing boundary conditions. We investigate the one-soliton and two-soliton solutions in detail. One-soliton is classified into two kinds. The ferromagnetic state has wavefunctions of domain-wall shape and its total spin is nonzero. The polar state provides a hole soliton and its total spin is zero. These two states are selected by choosing the type of the boundary conditions. In two-soliton collisions, we observe the spin-mixing or spin-transfer. It is found that, as "magnetic" carriers, solitons in the ferromagnetic state are operative for the spin-mixing while those in the polar are passive.

• 社団法人日本物理学会の論文
• 2006-06-15

著者

• Wadati M

  Univ. Tokyo

• Wadati M

  Univ. Tsukuba

• Wadati M

  Tokyo Univ. Sci. Tokyo

• Wadati Miki

  Department Of Physics Faculty Of Science University Of Tokyo

• Wadati Miki

  Department Of Physics Graduate School Science University Of Tokyo

• UCHIYAMA MASARU

  Department Of Aeronautics and Space Engineering, Tohoku University Aobayama Campus

• Wadati Miki

  Department Of Physics Faculty Of Science Tokyo University Of Science

• Uchiyama Masaru

  Department Of Physics Graduate School Of Science University Of Tokyo

• Uchiyama Masaru

  Department Of Aeronautics And Space Engineering Graduate School Of Engineering Tohoku University

• UCHIYAMA Masaru

  Department of Physics, Graduate School of Science, University of Tokyo

• IEDA Jun'ichi

  Institute for Materials Research, Tohoku University

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