Abstract

The effect of steric frustration on the collapse of a linear homopolymer is investigated. Depending on the temperature and the strength of the frustration, we find that three different phases exist: swollen, compact and branched. We study the phase diagram and the critical behaviour of the system through exact enumerations and Monte Carlo simulations. In addition we present an analytical argument which determines qualitatively the phase boundaries. Despite the similarity between our model and one previously introduced in the literature, there is a discrepancy on the value of a critical exponent.

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