Abstract
In this paper the time-space correlation of density fluctuation of the 3He reaction–diffusion model is investigated where the equilibrium distribution is described by the generalized Maxwell–Boltzmann distribution in the framework of Tsallis statistics. By using the density operator technique, the nonextensive pressure effect is introduced into the master equation and thus the generalized master equation is derived for the nonextensive system. This paper uses the 3He reaction–diffusion model to analyse the effect of nonextensive pressure on the fluctuation and finds that the nonextensive parameter q plays a very important role in determining the characteristics of the fluctuation waves.
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