Why photon only have helicity other than spin?
56379
Why does photon have only two possible eigenvalues of helicity?
154103
Is the change in orbital of an electron the only way a photon is created
81880
How can a photon have no mass and still travel at the speed of light?
143315
How does the Lorentz group act on a 4-vector in the spinor-helicity formalism $p_{\alpha\dot{\alpha}}$?
151039
Why are there no elementary charged, spin-zero particles?
110064
Why can't I just think the spin as rotating?
150075
Are photons electromagnetic waves, quantum waves, or both?
55992
Why is dipole the simplest source in electrodynamics?
103322
How can a red light photon be different from a blue light photon?
27098
Tachyons and Photons
77577
How does one experimentally determine chirality, helicity, spin and angular momentum of a fundamental particle?
125653
How does a spinning electron produce a magnetic field?
56610
Does a single white photon exist?
12847
If photons have no mass, how can they have momentum?
109743
Is a single photon always circularly polarized?
31390
What prevents photons from getting mass from higher order Feynman diagrams
141866
The lightest photon ever detected