roton

Japanese: roton
roton

…The constituent particles themselves may follow either Bose statistics or Fermi statistics. An example of the former is the phonons and rotons in liquid 4He under conditions of Bose-Einstein condensation. Phonons, also known as first sound, are related to changes in density. …

*Some of the terminology explanations that mention "roton" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この中には,構成粒子自体がボース統計に従う場合とフェルミ統計に従う場合がある。前者の例としては,ボース=アインシュタイン凝縮が起こっている状況下での液体4He中のフォノンとロトンrotonがある。フォノンは第1音波とも呼ばれ,密度の変化に関係している。…

※「roton」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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