| 单词 | partition function |
| 释义 | > as lemmaspartition function partition function n. Physics a sum of the form ∑i Ωi exp (−Ei/kT) (where Ωi is the degeneracy of the state with energy Ei, k is Boltzmann's constant, and T the absolute temperature), or an analogous integral, which enters into the expression for the distribution of the particles of a system among different energy states and other thermodynamic quantities (symbol Z). ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > quantum field theory > [noun] > partition function partition function1925 1925 Proc. National Acad. Sci. U.S.A. 11 193 The fraction of the total number of atoms of a given kind which is active in absorption at a given temperature is obtained..from the formula nr = [etc., where] T = absolute temperature, b(T) = the partition function. 1970 P. W. Atkins Molecular Quantum Mech. x. 392 The proportion of molecules in the rotational state J is given by Z−1(2J + 1) × exp{−E(J)/kT}, where Z is the rotational partition function. 1995 Jrnl. Molecular Biol. 253 473 Free energy calculations were carried out on a series of exosite-binding inhibitors of thrombin... The free energy internal energy and entropic contributions are readily calculated from the partition function. < as lemmas |
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