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I am interested in examining the case of an

__isolated__Einstein Solid (ES) with a decreasing number of oscillators. The total amount of energy of the ES is considered fixed. Whenever an oscillator abandons our model, it "leaves behind" the amount of energy it contained, so that the total amount of energy of the ES remains constant. As a result, the multiplicity and entropy of this ES decreases.

Can this system be considered as one (1)

__isolated__ES?

Can we say that the entropy decreases and that our ES system gets further and further away from equilibrium?

Thank you for your time and answers,

Ted.