Multispecies annihilating random walk transition at zero branching rate: cluster scaling behavior in a spin model.
Numerical and theoretical studies of a one-dimensional spin model with locally broken spin symmetry are presented. The multispecies annihilating random walk transition found at zero branching rate previously is investigated now concerning the cluster behavior of the underlying spins. Generic power-law behaviors are found, besides the phase transition point, also in the active phase with fulfillment of the hyperscaling law. On the other hand scaling laws connecting bulk and cluster exponents are broken--a possibility in no contradiction with basic scaling assumptions because of the missing absorbing phase.
Menyhárd
Nóra
N
Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary.
Odor
Géza
G