Quantum Coarse-Graining: An Information-theoretic Approach to thermodynamics

  title={Quantum Coarse-Graining: An Information-theoretic Approach to thermodynamics},
  author={Philippe Faist},
  journal={arXiv: Quantum Physics},
  • P. Faist
  • Published 11 July 2016
  • Physics
  • arXiv: Quantum Physics
We investigate fundamental connections between thermodynamics and quantum information theory. First, we show that the operational framework of thermal operations is nonequivalent to the framework of Gibbs-preserving maps, and we comment on this gap. We then introduce a fully information-theoretic framework generalizing the above by making further abstraction of physical quantities such as energy. It is technically convenient to work with and reproduces known results for finite-size quantum… 
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