…If we observe the number of particles n j occupying quantum state j , the number is either 0 or 1 in a single observation, but if the particle population is in thermal equilibrium at absolute temperature T , the average number of particles is given by. This is called the Fermi-Dirac distribution, or simply the Fermi distribution. Here, k is the Boltzmann constant, μ is the chemical potential, and the latter is determined by the condition that 〈 n 1 〉 + 〈 n 2 〉 + … is equal to the total number of particles. … *Some of the terminology explanations that mention "Fermi distribution" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…量子状態jを占めている粒子の数njを観測すれば,1回の観測では0または1であるが,粒子集団が絶対温度Tの熱平衡にあれば,粒子数の平均値は,で与えられる。これをフェルミ=ディラック分布,または単にフェルミ分布Fermi distributionという。ここにkはボルツマン定数,μは化学ポテンシャルで,後者は〈n1〉+〈n2〉+……が粒子の総数に等しくなるという条件で決まる。… ※「Fermi distribution」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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