Mean field and the confined single homopolymer

S. Pasquali, J. K. Percus

Research output: Contribution to journalArticle

Abstract

We develop a statistical model for a confined homopolymeric chain molecule based on a monomer grand ensemble representation. The molecule is subject to a confining external field, a backbone interaction, and an attractive interaction between any pair of monomers. An exact minimum principle for the thermodynamics of the backbone in an external field is obtained, and a controlled mean field approximation results in a modified minimum principle from which relevant physical quantities such as monomer density can be found. We explore the limit in which the chain is subject to tight confinement, and make a preliminary investigation of a prototypical system.

Original languageEnglish (US)
Pages (from-to)1303-1312
Number of pages10
JournalMolecular Physics
Volume107
Issue number13
DOIs
StatePublished - Oct 1 2009

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Keywords

  • Confined polymers
  • Folding
  • Long-range interactions

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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