Surface crossover exponent for branched polymers in two dimensions

Details Surface crossover exponent for branched polymers in two dimensions Surface crossover exponent for branched polymers in two dimensions

1995-09-27

arxiv.org/abs/cond-mat/9509169v1

Journal of Physics A 28, 6315 (1995)

Physics

Condensed Matter

10 pages, LaTeX with Institute of Physics macros, to appear in Journal of Physics A

Scientific paper

10.1088/0305-4470/28/22/008

Transfer-matrix methods on finite-width strips with free boundary conditions are applied to lattice site animals, which provide a model for randomly branched polymers in a good solvent. By assigning a distinct fugacity to sites along the strip edges, critical properties at the special (adsorption) and ordinary transitions are assessed. The crossover exponent at the adsorption point is estimated as $\phi = 0.505 \pm 0.015$, consistent with recent predictions that $\phi = 1/2$ exactly for all space dimensionalities.

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