paper

Theory of Branching and Annihilating Random Walks

arXiv:cond-mat/9609151 · doi:10.1103/PhysRevLett.77.4780

Abstract

A systematic theory for the diffusion--limited reaction processes and is developed. Fluctuations are taken into account via the field--theoretic dynamical renormalization group. For even the mean field rate equation, which predicts only an active phase, remains qualitatively correct near dimensions; but below a nontrivial transition to an inactive phase governed by power law behavior appears. For odd there is a dynamic phase transition for any which is described by the directed percolation universality class.

4 pages, revtex, no figures; final version with slight changes, now accepted for publication in Phys. Rev. Lett

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