We establish an expression of the entropy-from-work theorem that is complementary to the one originally proposed by Talkner, Hanggi, and Morillo [Phys. Rev. E 77, 051131 (2008)]. In the original expression the final energy is fixed, whereas in the present expression the initial energy is fixed.
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Complementary expressions for the entropy-from-work theorem.
Phys Rev E Stat Nonlin Soft Matter Phys
July 2008
Department of Physics, University of North Texas, Denton, Texas 76203-1427, USA.
We establish an expression of the entropy-from-work theorem that is complementary to the one originally proposed by Talkner, Hanggi, and Morillo [Phys. Rev. E 77, 051131 (2008)].
View Article and Find Full Text PDFMicrocanonical quantum fluctuation theorems.
Phys Rev E Stat Nonlin Soft Matter Phys
May 2008
Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany.
Previously derived expressions for the characteristic function of work performed on a quantum system by a classical external force are generalized to arbitrary initial states of the considered system and to Hamiltonians with degenerate spectra. In the particular case of microcanonical initial states, explicit expressions for the characteristic function and the corresponding probability density of work are formulated. Their classical limit as well as their relations to the corresponding canonical expressions are discussed.
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