photon and the absence of longitudinal polarization

[Awatarn]

1. The problem statement, all variables and given/known data

What property of the photon is responsible for the absence of longitudinal polarization?


2. Relevant equations



3. The attempt at a solution

I thought it is because of the presence of its angular momentum. Is it true?

[turin]

It is a gauge choice (depending on what you mean by the photon). See Coulomb gauge.