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Flaw of Jarzynski's equality when applied to systems with several degrees of freedom

D. H. E. Gross
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Abstract

Simple example: During the sudden expansion of an isolated ideal gas from a small volume V_0 into a larger one V_1, the entropy changes by Delta S= N ln(V_1/V_0)=-beta Delta F>0 but no work W is produced nor absorbed. Consequently, Jarzynski's identity = exp(-beta Delta F) is wrong.

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D. H. E. Gross. 2005-08-30. Flaw of Jarzynski's equality when applied to systems with several degrees of freedom. https://arxiv.org/abs/cond-mat/0508721

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