Ensemble Method in the Theory of Irreversibility

  title={Ensemble Method in the Theory of Irreversibility},
  author={R. Zwanzig},
  journal={Journal of Chemical Physics},
  • R. Zwanzig
  • Published 1960
  • Chemistry
  • Journal of Chemical Physics
  • We describe a new formulation of methods introduced in the theory of irreversibility by Van Hove and Prigogine, with the purpose of making their ideas easier to understand and to apply. The main tool in this reformulation is the use of projection operators in the Hilbert space of Gibbsian ensemble densities. Projection operators are used to separate an ensemble density into a ``relevant'' part, needed for the calculation of mean values of specified observables, and the remaining ``irrelevant… CONTINUE READING
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