Intrinsic viscosity from the Green-Kubo formula

A. Jagannathan, Y. Oono, B. Schaub

Research output: Contribution to journalArticle

Abstract

The Green-Kubo formalism and the conventional Kirkwood-Riseman formalism (with and without hydrodynamic preaveraging approximation) are compared in the calculation of the intrinsic viscosity of a Gaussian chain. It is discussed that the Green-Kubo-type formula for the intrinsic viscosity is correct to order ε(=4-d, d being the spatial dimension). Then it is shown that without self-avoiding interaction the two formalisms give identical results to order ε; i.e., the Kirkwood-Riseman formalism is as reliable as the Green-Kubo formalism without self-avoiding interactions. With self-avoiding interaction it is argued that the validity of the Kirkwood-Riseman formalism cannot be expected.

Original languageEnglish (US)
Pages (from-to)2276-2285
Number of pages10
JournalThe Journal of Chemical Physics
Volume86
Issue number4
StatePublished - Dec 1 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Jagannathan, A., Oono, Y., & Schaub, B. (1986). Intrinsic viscosity from the Green-Kubo formula. The Journal of Chemical Physics, 86(4), 2276-2285.