Barrier crossing of a semiflexible ring polymer

K. Lee, W. Sung

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The thermally activated crossing of a semiflexible ring polymer over a potential barrier was studied. The crossing rate was calculated using Kramers' rate theory and functional integral method. The crossing rate of a flexible ring was found larger than that for a stiff ring due to its conformational fluctuations. The ring underwent a compact-stretch transition for a long chain length and weak bending modulus. The stretched conformation of the chain resulted in increase of rate with decreasing activation energy.

Original languageEnglish
Article number041801
Pages (from-to)418011-418016
Number of pages6
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number4 I
StatePublished - Oct 2001


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