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Incertitude relations from QFT

  1. Nov 8, 2009 #1

    There are no incertitude relations in QFT. On the other hand, these incertainty relations do exist in non-relativistic QM. How can we reconcile these two facts ? Is it possible to "derive" uncertainty relations from QFT by "taking the non-relativistic limit" ?

    Thanks !
  2. jcsd
  3. Nov 8, 2009 #2
    In QED there is, for example, the number-of-photons/wave-phase uncertainty, and some others.
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