Monte Carlo simulation of a lattice model for the dynamics of randomly branching double-folded ring polymers
| العنوان: | Monte Carlo simulation of a lattice model for the dynamics of randomly branching double-folded ring polymers |
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| المؤلفون: | Ralf Everaers, Max Kolb, Mohammad Reza Ejtehadi, Elham Ghobadpour |
| المصدر: | Physical Review E. 104 |
| بيانات النشر: | American Physical Society (APS), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Condensed Matter::Soft Condensed Matter, Physics, Quantitative Biology::Biomolecules, Reptation, Ring (mathematics), Excluded volume, Monte Carlo method, Ideal (ring theory), Statistical physics, Branching (polymer chemistry), Lattice model (physics), Universality (dynamical systems) |
| الوصف: | Supercoiled DNA, crumpled interphase chromosomes, and topologically constrained ring polymers often adopt treelike, double-folded, randomly branching configurations. Here we study an elastic lattice model for tightly double-folded ring polymers, which allows for the spontaneous creation and deletion of side branches coupled to a diffusive mass transport, which is local both in space and on the connectivity graph of the tree. We use Monte Carlo simulations to study systems falling into three different universality classes: ideal double-folded rings without excluded volume interactions, self-avoiding double-folded rings, and double-folded rings in the melt state. The observed static properties are in good agreement with exact results, simulations, and predictions of Flory theory for randomly branching polymers. For example, in the melt state rings adopt compact configurations and exhibit territorial behavior. In particular, we show that the emergent dynamics is in excellent agreement with a recent scaling theory and illustrate the qualitative differences with the familiar reptation dynamics of linear chains. |
| تدمد: | 2470-0053 2470-0045 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48f0b29834203178ce90a8eee722423d https://doi.org/10.1103/physreve.104.014501 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....48f0b29834203178ce90a8eee722423d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24700053 24700045 |
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