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原文連結
論文資訊
- 類型：已發表論文
- 日期：2016
摘要
Abstract: We present an alternative to the perturbative (in coupling constant) diagrammatic approach for studying 隨機 dynamics of a class of reaction 擴散 systems. Our approach is based on an auxiliary field loop expansion for the path integral representation for the generating functional of the noise induced correlation functions of the fields describing these systems. The systems we consider include Langevin systems describable by the set of self interacting classical fields φi(x, t) in the presence of external noise ηi(x, t), namely (∂t − ν∇2)φ − F [φ] = η, as well as chemical reaction annihilation processes obtained by applying the manybody approach of Doi–Peliti to the Master Equation formulation of these problems. We consider two different effective actions, one based on the Onsager–Mac
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