Dual Chain Perturbation theory: A new equation of state for polyatomic molecules

In the development of equations of state for polyatomic molecules, thermodynamic perturbation theory (TPT) is widely used to calculate the change in free energy due to chain formation. TPT is a simplification of a more general and exact multi-density cluster expansion for associating fluids. In TPT...

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Bibliographic Details
Published inarXiv.org
Main Author Marshall, Bennett D
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 04.07.2016
Subjects
Chains
Clusters
Equations of state
Free energy
Perturbation theory
Physics - Soft Condensed Matter
Polyatomic molecules
Reference systems
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Summary:In the development of equations of state for polyatomic molecules, thermodynamic perturbation theory (TPT) is widely used to calculate the change in free energy due to chain formation. TPT is a simplification of a more general and exact multi-density cluster expansion for associating fluids. In TPT all contributions to the cluster expansion which contain chain - chain interactions are neglected. That is, all inter-chain interactions are treated at the reference fluid level. This allows for the summation of the cluster theory in terms of reference system correlation functions only. While highly successful, TPT has many handicaps which result from the neglect of chain - chain interactions. The subject of this document is to move beyond the limitations of TPT, and included chain - chain contributions to the equation of state.
Bibliography:SourceType-Working Papers-1
ObjectType-Working Paper/Pre-Print-1
content type line 50
ISSN:2331-8422
DOI:10.48550/arxiv.1607.00984