A Comment on Fluctuations around Non-Equilibrium Steady States.
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The authors study fluctuations around non-equilibrium steady states of some model nonlinear chemical systems. A previous result which states that the mean square fluctuation computed from a master equation in the space of internal states of the reacting species is identical to that calculated from Einsteins fluctuation formula, is shown to be wrong. Analysis of fluctuations of that master equation leads to a result identical to that obtained from a master equation for the total concentration of the reacting species, which is different from the equilibrium Einsteins relation result. Modified author abstract
- Physical Chemistry