Journal
PHYSICAL REVIEW E
Volume 92, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.92.012601
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Funding
- KAKENHI [26103525, 24340100]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- JSPS Core-to-Core Program (Nonequilibrium Dynamics of Soft Matter and Information)
- Grants-in-Aid for Scientific Research [26103525] Funding Source: KAKEN
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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.
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