Transmission of excitations in a spin-1 Bose-Einstein condensate through a barrier

Shohei Watabe, Yusuke Kato

研究成果: Article査読

10 被引用数 (Scopus)

抄録

We investigate tunneling of excitations across a potential barrier separating two spin-1 Bose-Einstein condensates. Using mean-field theory at absolute zero temperature, we determine the transmission coefficients of excitations in the saturated magnetization state and unsaturated magnetization states. All excitations, except the quadrupolar spin mode in the saturated magnetization state, show the anomalous tunneling phenomenon characterized as perfect tunneling in the low-momentum limit through a potential barrier. The quadrupolar spin mode in the saturated magnetization state, whose spectrum is massive, shows total reflection. We discuss properties common between excitations showing the anomalous tunneling phenomenon. Excitations showing perfect tunneling have a gapless spectrum in the absence of the magnetic field, and their wave functions in the low-energy limit are the same as the condensate wave function.

本文言語English
論文番号053624
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
83
5
DOI
出版ステータスPublished - 2011 5月 23
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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