We present a response theory for random channel kinetics, based on the method of characteristic functionals. We assume that the fluctuations of the rate coefficients are generated by the contributions of a large number of reaction channels, and can be described in terms of a set of grand...

A general approach is introduced for describing the time evolution of a Markov process in continuous time and with a finite number of states. The total number of transition events from one state to other states and of the total sojourn times of the system in the different states are used as...

We compute the characteristic functional of a nonlinear transformation of a set of random variables. The equation is applied to the study of fractal stochastic processes with multiplicative noise. For illustration we investigate two types of chemical systems subjected to environmental...