It is shown that some of the simplest interacting many body systems exhibiting non-ergodicity necessarily satisfy certain identities involving their equilibrium multipoint static correlations. These identities may be useful in the study of model non-ergodic systems being analysed or simulated. Some examples of pertinent model non-ergodic systems are given to illustrate the material discussed. © 1992.

Surajit Sen

Department of Bioscience & Bioengineering

IIT Jodhpur

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Journal	Physica A: Statistical Mechanics and its Applications
ISSN	03784371