Skip to Main content Skip to Navigation
Journal articles

Partition Function and Configurational Entropy in Non-Equilibrium States: A New Theoretical Model

Abstract : A new model of non-equilibrium thermodynamic states has been investigated on the basis of the fact that all thermodynamic variables can be derived from partition functions. We have thus attempted to define partition functions for non-equilibrium conditions by introducing the concept of pseudo-temperature distributions. These pseudo-temperatures are configurational in origin and distinct from kinetic (phonon) temperatures because they refer to the particular fragments of the system with specific energies. This definition allows thermodynamic states to be described either for equilibrium or non-equilibrium conditions. In addition; a new formulation of an extended canonical partition function; internal energy and entropy are derived from this new temperature definition. With this new model; computational experiments are performed on simple non-interacting systems to investigate cooling and two distinct relaxational effects in terms of the time profiles of the partition function; internal energy and configurational entropy.
Document type :
Journal articles
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-02935199
Contributor : Eva Fareau <>
Submitted on : Thursday, September 10, 2020 - 10:41:18 AM
Last modification on : Wednesday, October 14, 2020 - 3:48:50 AM

File

entropy-20-00218.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution - NoDerivatives 4.0 International License

Identifiers

Collections

Citation

Akira Takada, Reinhard Conradt, Pascal Richet. Partition Function and Configurational Entropy in Non-Equilibrium States: A New Theoretical Model. Entropy, MDPI, 2018, 20 (4), pp.218. ⟨10.3390/e20040218⟩. ⟨insu-02935199⟩

Share

Metrics

Record views

15

Files downloads

20