Zitat:
Zitat von Timm
Ja, etwa hier:
https://en.wikipedia.org/wiki/Photon
While many introductory texts treat photons using the mathematical techniques of non-relativistic quantum mechanics, this is in some ways an awkward oversimplification, as photons are by nature intrinsically relativistic. Because photons have zero rest mass, no wave function defined for a photon can have all the properties familiar from wave functions in non-relativistic quantum mechanics.[g] In order to avoid these difficulties, physicists employ the second-quantized theory of photons described below, quantum electrodynamics, in which photons are quantized excitations of electromagnetic modes. |
Wenn ich mich recht entsinne, gibt es überhaupt Probleme, in diesem Fall einen Ortsoperator zu definieren, aber ... schon verdamp lang her.