They say that a photon has two degrees of freedom, its two polarization states.(adsbygoogle = window.adsbygoogle || []).push({});

Does that also mean that the electron has only two degrees of freedom, its two spin states?

What about the frequency of a photon, is that not a degree of freedom? Or the three space directions that a electron can travel? What mans degree of freedom anyway when refering to elementary particles and its quantum fields?

thanks

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# Degrees of freedom of quantum fields and elementary particles

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