Entropy and Reversible Catalysis.

@article{Wilming2021EntropyAR,
  title={Entropy and Reversible Catalysis.},
  author={Henrik Wilming},
  journal={Physical review letters},
  year={2021},
  volume={127 26},
  pages={
          260402
        }
}
  • H. Wilming
  • Published 10 December 2020
  • Physics
  • Physical review letters
I show that nondecreasing entropy provides a necessary and sufficient condition to convert the state of a physical system into a different state by a reversible transformation that acts on the system of interest and a further "catalyst," whose state has to remain invariant exactly in the transition. This statement is proven both in the case of finite-dimensional quantum mechanics, where von Neumann entropy is the relevant entropy, and in the case of systems whose states are described by… 

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