Published in

IOP Publishing, Journal of Physics A: Mathematical and General, 6(21), p. L339-L344

DOI: 10.1088/0305-4470/21/6/004

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Crossover in the one-dimensional self-directed walk

Journal article published in 1988 by L. Turban ORCID, J.-M. Debierre
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The self-directed walk is studied in one dimension. In this walk with memory the jump probability is given by WN+or-(i)=(1+exp(+or-g Delta N(i)))-1 where Delta N is the difference between the number of times the sites in the forward and backward directions have been visited after N steps. When g>O there is a crossover between a Gaussian random walk and an intermediate regime where the radius of gyration grows like N2 followed by a crossover to the asymptotic regime where the walk is directed. When g<0 a single crossover is obtained between the Gaussian random walk and a saturation regime at large N when the walk is self-attracting.