Sinelnikova, A. and Niemi, A. J. and Ulybyshev, M. (2015) Phase diagram and the pseudogap state in a linear chiral homopolymer model. PHYSICAL REVIEW E, 92 (3): 032602. ISSN 2470-0045, 2470-0053
Full text not available from this repository. (Request a copy)Abstract
The phase structure of a single self-interacting homopolymer chain is investigated in terms of a universal theoretical model, designed to describe the chain in the infrared limit of slow spatial variations. The effects of chirality are studied and compared with the influence of a short-range attractive interaction between monomers, at various ambient temperature values. In the high-temperature limit the homopolymer chain is in the self-avoiding random walk phase. At very low temperatures two different phases are possible: When short-range attractive interactions dominate over chirality, the chain collapses into a space-filling conformation. But when the attractive interactions weaken, there is a low-temperature unfolding transition and the chain becomes like a straight rod. Between the high- and low-temperature limits, several intermediate states are observed, including the theta regime and pseudogap state, which is a novel form of phase state in the context of polymer chains. Applications to polymers and proteins, in particular collagen, are suggested.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PROTEIN-FOLDING SIMULATIONS; RENORMALIZATION GROUP; CRITICAL EXPONENTS; FIELD-THEORY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Jun 2019 08:34 |
| Last Modified: | 07 Jun 2019 08:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4825 |
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