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Updated: Jun 26, 2026

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Published on: October 31, 2019
Conformational transformations induced by the charge-curvature interaction at finite temperature
Yu B Gaididei1, C Gorria, P L Christiansen
1Bogolyubov Institute for Theoretical Physics, Metrologichna street 14 B, 01413, Kiev, Ukraine.
Abstract:
The role of thermal fluctuations in the conformational dynamics of a single closed filament is studied. It is shown that, due to the interaction between charges and bending degrees of freedom, initially circular aggregates may undergo transformation to a polygonal shape. The transition occurs in the cases of hardening and softening charge-bending interaction. In the former case the charge and curvature are smoothly distributed along the chain, while in the latter spontaneous kink formation is initiated. The transition to a noncircular conformation is analogous to a phase transition of the second kind.
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