Time Dependent Processes
TPS/TIS as normally implemented can be acceptable for non-equilibrium calculations provided that the interfacial fluxes are time-independent (stationary). To treat non-stationary systems in which there is time dependence in the dynamics, due either to variation of an external parameter or to evolution of the system itself, then other rare event methods may be needed, such as Stochastic Process Rare Event Sampling.
Read more about this topic: Transition Path Sampling
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