“partition function”的概念、定义、翻译、参考文献-科学参考

partition function

Physics

The quantity Z defined by Z=Σ‎exp(−E_i/kT), where the sum is taken over all states i of the system. E_i is the energy of the ith state, k is the Boltzmann constant, and T is the thermodynamic temperature. Z is a quantity of fundamental importance in equilibrium statistical mechanics. For a system in which there are nontrivial interactions, it is very difficult to calculate the partition function exactly. For such systems it is necessary to use approximation techniques and/or model systems. The partition function links results at the atomic level to thermodynamics, since Z is related to the Helmholtz free energy F by F=kTlnZ.

Chemistry

The quantity Z defined by
$Z = \sum exp (- E_{i} / k T),$
where the sum is taken over all states i of the system. E_i is the energy of the ith state, k is the Boltzmann constant, and T is the thermodynamic temperature. Z is a quantity of fundamental importance in equilibrium statistical mechanics. For a system in which there are nontrivial interactions, it is very difficult to calculate the partition function exactly. For such systems it is necessary to use approximation techniques. The partition function links results at the atomic level to thermodynamics, since Z is related to the Helmholtz free energy F by F = kTlnZ.

单词	partition function
释义	partition function Physics The quantity Z defined by Z=Σ‎exp(−E_i/kT), where the sum is taken over all states i of the system. E_i is the energy of the ith state, k is the Boltzmann constant, and T is the thermodynamic temperature. Z is a quantity of fundamental importance in equilibrium statistical mechanics. For a system in which there are nontrivial interactions, it is very difficult to calculate the partition function exactly. For such systems it is necessary to use approximation techniques and/or model systems. The partition function links results at the atomic level to thermodynamics, since Z is related to the Helmholtz free energy F by F=kTlnZ. Chemistry The quantity Z defined by $Z = \sum exp (- E_{i} / k T),$ where the sum is taken over all states i of the system. E_i is the energy of the ith state, k is the Boltzmann constant, and T is the thermodynamic temperature. Z is a quantity of fundamental importance in equilibrium statistical mechanics. For a system in which there are nontrivial interactions, it is very difficult to calculate the partition function exactly. For such systems it is necessary to use approximation techniques. The partition function links results at the atomic level to thermodynamics, since Z is related to the Helmholtz free energy F by F = kTlnZ.
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