The ground-state scaling properties of directed paths on a (1 + 1)-dimensional lattice are reanalysed. To each bond energy 0 or 1 is randomly assigned with probability p or 1 - p, respectively. At variance with previous claims, the result strongly suggests that only one universality class exists for 0 < p < 1, except for p = p(c), the directed percolation threshold.
Polymers with a bimodal disorder distribution and directed percolation
MARITAN, AMOS;SENO, FLAVIO
1997
Abstract
The ground-state scaling properties of directed paths on a (1 + 1)-dimensional lattice are reanalysed. To each bond energy 0 or 1 is randomly assigned with probability p or 1 - p, respectively. At variance with previous claims, the result strongly suggests that only one universality class exists for 0 < p < 1, except for p = p(c), the directed percolation threshold.
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