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- W2011471937 abstract "Abstract By considering a simple thermodynamic system, in thermal equilibrium at a temperature T and in the presence of an external parameter A , we focus our attention on the particular thermodynamic (macroscopic) relation d U = T d S + δ W . Using standard axioms from information theory and the fact that the microscopic energy levels depend upon the external parameter A , we show that all usual results of statistical mechanics for reversible processes follow straightforwardly, without invoking the Maximum Entropy principle. For the simple system considered herein, two distinct forms of heat contributions appear naturally in the Clausius definition of entropy, T d S = δ Q ( T ) + δ Q ( A ) = C A ( T ) d T + C T ( A ) d A . We give a special attention to the amount of heat δ Q ( A ) = C T ( A ) d A , associated with an infinitesimal variation d A at fixed temperature, for which a “generalized heat capacity”, C T ( A ) = T ( ∂ S / ∂ A ) T , may be defined. The usefulness of these results is illustrated by considering some simple thermodynamic cycles." @default.
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- W2011471937 date "2010-03-01" @default.
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- W2011471937 title "Computation of energy exchanges by combining information theory and a key thermodynamic relation: Physical applications" @default.
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- W2011471937 doi "https://doi.org/10.1016/j.physa.2009.11.004" @default.
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