Hello,I'm studing the fundamental principles of statistical mechanics and I don't understand the "principle of equal a priory probabities" for this reason: the principle states that all states in the representative emsemble have the same probability which means that the density [itex]\rho(p,q)[/itex] should be constant in the corresponding region of phase space, this is ok for the microcanonical emsemble however for the canonical emsemble this is no longer true if the corresponding region in phase space includes points with different energies.(adsbygoogle = window.adsbygoogle || []).push({});

In any case, according to that principle it seems that the only function compatible with it is[itex]\rho(p,q)=const.[/itex]

Can some one please tell what is wrong with my interpretation of the principle?

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# Clasical statistical mechanics

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