Supersymmetry in Stochastic Processes with Higher-Order Time Derivatives
Hagen Kleinert, Sergei V. Shabanov
Abstract
A supersymmetric path integral representation is developed for stochastic processes whose Langevin equation contains any number N of time derivatives, thus generalizing the Langevin equation with inertia studied by Kramers, where N=2. The supersymmetric action contains N fermion fields with first-order time derivatives whose path integral is evaluated for fermionless asymptotic states.
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