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Article
Field Theory of Branching and Annihilating Random Walks
We develop a systematic analytic approach to the problem of branching and annihilating random walks, equivalent to the diffusion-limited reaction processes 2A → ∅ and A → (m + 1) A, where m ≥ 1. Starting from the...
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Article
Field theory of critical behavior in a driven diffusive system
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Article
Field theory of critical behavior in a driven diffusive system
We use a field theoretic renormalization group method to study the critical properties of a diffusive system with a single conserved density subject to a constant uniform external field. A fixed point stable b...