theory center website | 素粒子原子核研究所理論部門理論センター┃ページタイトルバックイメージ theory center website | 素粒子原子核研究所理論部門理論センター┃ページタイトルバックイメージ

セミナー

seminar

Radiation from accelerated impurities in a Bose–Einstein condensate(Japanese)

  • SPEAKER 鈴木 淳(Jun Suzuki) (Graduate School of Information Systems,the University of Electro-Communications)
  • PLACE Kenkyu Honkan 3F RM 322
(ABSTRACT)

We investigate radiation spectra arising from accelerated point-like impurities in the homogeneous Bose– Einstein condensate. A general formula for the radiation spectrum is obtained in the integral form as a function of given impurity trajectory within the Bogoliubov approximation. The Planckian spectrum is obtained for a special accelerated motion, which is shown to be unphysical. Non-Planckian spectrum is found in the case of a uniformly accelerated impurity. We compare our result with similar settings discussed in other quantum systems.

カテゴリー

ページ先頭へ戻る