Hidden multiparticle excitation in a weakly interacting Bose-Einstein condensate

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We investigate multiparticle excitation effect on a collective density excitation as well as a single-particle excitation in a weakly interacting Bose-Einstein condensate (BEC). We find that although the weakly interacting BEC offers weak multiparticle excitation spectrum at low temperatures, this multiparticle excitation effect may not remain hidden, but emerges as bimodality in the density response function through the single-particle excitation. Identification of spectra in the BEC between the single-particle excitation and the density excitation is also assessed at nonzero temperatures, which has been known to be unique nature in the BEC at absolute zero temperature.

本文言語English
論文番号033606
ジャーナルPhysical Review A
97
3
DOI
出版ステータスPublished - 2018 3月 13
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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