تقرير
Criteria for minimal model of driven polymer translocation
| العنوان: | Criteria for minimal model of driven polymer translocation |
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| المؤلفون: | Suhonen, P. M., Kaski, K., Linna, R. P. |
| المصدر: | Phys. Rev. E 90, 042702 (2014) |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter Physics (Other) Quantitative Biology |
| مصطلحات موضوعية: | Physics - Biological Physics, Condensed Matter - Soft Condensed Matter, Quantitative Biology - Biomolecules |
| الوصف: | While the characteristics of the driven translocation for asymptotically long polymers are well understood, this is not the case for finite-sized polymers, which are relevant for real-world experiments and simulation studies. Most notably, the behavior of the exponent $\alpha$, which describes the scaling of the translocation time with polymer length, when the driving force $f_p$ in the pore is changed, is under debate. By Langevin dynamics simulations of regular and modified translocation models using the freely-jointed-chain polymer model we find that a previously reported incomplete model, where the {\it trans} side and fluctuations were excluded, gives rise to characteristics that are in stark contradiction with those of the complete model, for which $\alpha$ increases with $f_p$. Our results suggest that contribution due to fluctuations is important. We construct a minimal model where dynamics is completely excluded to show that close alignment with a full translocation model can be achieved. Our findings set very stringent requirements for a minimal model that is supposed to describe the driven polymer translocation correctly. Comment: 8 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevE.90.042702 |
| URL الوصول: | http://arxiv.org/abs/1405.0902 |
| رقم الأكسشن: | edsarx.1405.0902 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevE.90.042702 |
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