Driven anomalous diffusion: An example from polymer stretching

Takuya Saito, Takahiro Sakaue

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

The way tension propagates along a chain is a key to govern many anomalous dynamics in macromolecular systems. After introducing the weak and the strong force regimes of the tension propagation, we focus on the latter, in which the dynamical fluctuations of a segment in a long polymer during its stretching process is investigated. We show that the response, i.e., average drift, is anomalous, which is characterized by the nonlinear memory kernel, and its relation to the fluctuation is nontrivial. These features are discussed on the basis of the generalized Langevin equation, in which the role of the temporal change in spring constant due to the stress hardening is pinpointed. We carried out the molecular dynamics simulation, which supports our theory.

本文言語英語
論文番号012601
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
92
1
DOI
出版ステータス出版済み - 7 6 2015

All Science Journal Classification (ASJC) codes

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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