A perspective on the connections between linear and branched polymer theta collapses in two dimensions is provided by a vesicle model with vacancies. Percolation geometry plays simultaneously key roles in determining the multicritical properties of both problems. For branched polymers, besides two distinct theta lines, a transition between different collapsed regimes and several exponents are exactly obtained. Universality issues are also discussed.
Vesicle Model of Linear-polymer and Branched-polymer Theta-collapses
STELLA, ATTILIO
1994
Abstract
A perspective on the connections between linear and branched polymer theta collapses in two dimensions is provided by a vesicle model with vacancies. Percolation geometry plays simultaneously key roles in determining the multicritical properties of both problems. For branched polymers, besides two distinct theta lines, a transition between different collapsed regimes and several exponents are exactly obtained. Universality issues are also discussed.File in questo prodotto:
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