Quantum solution to the arrow-of-time dilemma.

  title={Quantum solution to the arrow-of-time dilemma.},
  author={Lorenzo Maccone},
  journal={Physical review letters},
  volume={103 8},
  • L. Maccone
  • Published 4 February 2008
  • Physics, Education
  • Physical review letters
The arrow-of-time dilemma states that the laws of physics are invariant for time inversion, whereas the familiar phenomena we see everyday are not (i.e., entropy increases). I show that, within a quantum mechanical framework, all phenomena which leave a trail of information behind (and hence can be studied by physics) are those where entropy necessarily increases or remains constant. All phenomena where the entropy decreases must not leave any information of their having happened. This… 

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