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Commutation relations

  1. Oct 16, 2006 #1
    Does the usual commutation relations, e.g. between position and momentum, remains valid in relativistic quantum mechanics?
  2. jcsd
  3. Oct 16, 2006 #2

    Meir Achuz

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    Yes in one particle RQM like the Dirac equation.
    But things get more complicated in QFT.
  4. Oct 18, 2006 #3


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    No, because there's no such thing as time operator in quantum mechanics.

  5. Oct 18, 2006 #4
    As far as I'm aware, there's no such thing as a time operator in field theory. My understanding was that, for field theory, they demoted position to a parameter like time, and promoted the wave equation to the status of an operator.
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