Center for Theoretical Chemical Physics Laboratory of Molecular Catalysis Innovative Material 90 n,的平均值 1aln∑e"r(u-erB B 8(u-8t) Bosons:n,=0,1,...,oo I oIne(ue2a- n. B O(u-8,) 1 oIn1-e(-s.1 oIn1-el-e.) ∂(u-8,) B 8(u-8) 1 1 01-ea-e.)1 Be(u-6. B 1-e(u-6:)B O(u-8) B 1-e(H-E:)B 振华 2013/9/26 统计热力学第三章 27 造李 振 华 制 2013/9/26 统计热力学-第三章 27 造 nτ的平均值 ( ) 1 ln n e n Bosons: nτ = 0, 1, …, ( ) 1 ln ( ) n e n ( ) ( ) ( ) ( ) ( ) 1 ( ) ( ) 2( ) 1 1 ( ) 1 1 1 1 ( ) 1 l n 1 ( ) 1 l n 1 ( ) 1 l n 1 e e e e e e e e n