- #1

QuasarBoy543298

- 32

- 2

_{μ}→ A

_{μ}+ ∂

_{μ}f the actions stays the same, except some irrelevant constant).

now after that long preview, my question is - how can we conclude from that freedom that we can find a solution for the field A, with any boundary conditions, that satisfies the Lorentz gauge ( ∂

_{μ}A

^{μ}= 0)?