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arXiv · cond-mat/9901182

Sequence randomness and polymer collapse transitions

Pietro Monari·Attilio L. Stella·Carlo Vanderzande·Enzo Orlandini
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Abstract

Contrary to expectations based on Harris' criterion, chain disorder with frustration can modify the universality class of scaling at the theta transition of heteropolymers. This is shown for a model with random two-body potentials in 2D on the basis of exact enumeration and accurate Monte Carlo results. When frustration grows beyond a certain finite threshold, the temperature below which disorder becomes relevant coincides with the theta one and scaling exponents definitely start deviating from those valid for homopolymers.

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Pietro Monari, Attilio L. Stella, Carlo Vanderzande, Enzo Orlandini. 1999-02-03. Sequence randomness and polymer collapse transitions. https://doi.org/10.1103/physrevlett.83.112

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