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Tightness of slip-linked polymer chains | | Ralf Metzler
; Andreas Hanke
; Paul G. Dommersnes
; Yacov Kantor
; Mehran Kardar
; | | Date: |
5 Feb 2002 | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | We study the interplay between entropy and topological constraints for a polymer chain in which sliding rings (slip-links) enforce pair contacts between monomers. These slip-links divide a closed ring polymer into a number of sub-loops which can exchange length between each other. In the ideal chain limit, we find the joint probability density function for the sizes of segments within such a slip-linked polymer chain (paraknot). A particular segment is tight (small in size) or loose (of the order of the overall size of the paraknot) depending on both the number of slip-links it incorporates and its competition with other segments. When self-avoiding interactions are included, scaling arguments can be used to predict the statistics of segment sizes for certain paraknot configurations. | | Source: | arXiv, cond-mat/0202075 | | Other source: | [GID 172093] pmid12188699 | | Services: | Forum | Review | PDF | Favorites | |
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