2 0 Se p 20 07 A field theoretic approach to master equations and a variational method beyond the Poisson ansatz


We develop a variational scheme in a field theoretic approach to a stochastic process. While various stochastic processes can be expressed using master equations, in general it is difficult to solve the master equations exactly, and it is also hard to solve the master equations numerically because of the curse of dimensionality. The field theoretic approach… (More)

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