Dipole oscillation of a trapped Bose-Fermi-mixture gas in collisionless and hydrodynamic regimes

Yoji Asano, Shohei Watabe, Tetsuro Nikuni

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Dipole oscillation is studied in a normal phase of a trapped Bose-Fermi-mixture gas composed of single-species bosons and single-species fermions. Applying the moment method to the linearized Boltzmann equation, we derive a closed set of equations of motion for the center-of-mass position and momentum of both components. By solving the coupled equations, we reveal the behavior of dipole modes in the transition between the collisionless regime and the hydrodynamic regime. We find that two oscillating modes in the collisionless regime have distinct fates in the hydrodynamic regime: one collisionless mode shows a crossover to a hydrodynamic in-phase mode, and the other collisionless mode shows a transition to two purely damped modes. The temperature dependence of these dipole modes are also discussed.

本文言語English
論文番号013611
ジャーナルPhysical Review A
101
1
DOI
出版ステータスPublished - 2020 1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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