Incertitude relations from QFT

[TeTeC]

Hello,

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 !

 

[Bob_for_short]

In QED there is, for example, the number-of-photons/wave-phase uncertainty, and some others.