Abstract
We discuss how the introduction of quenched impurities changes the exponents of a self-avoiding walk on a lattice. We find that γ, the exponent for the number of walks, does not change. On the other hand the exponent ν for the mean square end to end distance does change. This is caused by a singular normalization atp=p c , which is necessary to compensate for the allowed number of walks on the diluted lattice.
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After submitting this work we received a preprint from Ramal, R., Toulouse, G., Vannimenus, J.: (to be published, J. de Physique, March 1984) where they also study this problem. They predict through the use of a Flory type of argument a lower value for ν on the diluted lattice, in contradiction to our result
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Lyklema, J.W., Kremer, K. Self-avoiding walks on randomly diluted lattices. Z. Physik B - Condensed Matter 55, 41–44 (1984). https://doi.org/10.1007/BF01307499
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DOI: https://doi.org/10.1007/BF01307499