Consistency of PT-symmetric quantum mechanics

  title={Consistency of PT-symmetric quantum mechanics},
  author={Dorje C. Brody},
  journal={Journal of Physics A: Mathematical and Theoretical},
  • D. Brody
  • Published 10 August 2015
  • Physics
  • Journal of Physics A: Mathematical and Theoretical
In recent reports, suggestions have been put forward to the effect that parity and time-reversal (PT) symmetry in quantum mechanics is incompatible with causality. It is shown here, in contrast, that PT-symmetric quantum mechanics is fully consistent with standard quantum mechanics. This follows from the surprising fact that the much-discussed metric operator on Hilbert space is not physically observable. In particular, for closed quantum systems in finite dimensions there is no statistical… 

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  • D. Brody
  • Physics
    Journal of Physics: Conference Series
  • 2021
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