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Название: Fluctuations in Nonequilibrium Systems and Broken Supersymmetry
Автор: Zimmer M.
The fluctuation-dissipation theorem is not expected to hold for systems that either violate detailed balance or have time-dependent or nonpotential forces, Therefore the relation between response and correlation functions should have contributions due to the nonequilibrium nature. An explicit formula for such a contribution is calculated, which in the present derivation appears as a history-dependent term. These relations are the Ward-Takahashi identities of a super-symmetric formulation of the Langevin models, and the new term results from a broken supersymmetry.