Statistische Bewegungsgesetze relaxierender Systeme

Abstract

Dynamical properties of a physical systemσ in the vicinity of a stable stationary stateZ can be determined approximately from observation of this state, that is from the correlation functions of one or several observables in the stateZ. This will be done with utilization of the principle of unprejudized estimate.

The number of observables and the degree of correlation functions observed, define a certain “degree of observation” of the system. Approximations of the dynamics of the system belonging to several degrees of observations are compared and discussed in detail. The general formalism is demonstrated by a simple example.