Six-photon scattering (2→4)
$\gamma\gamma \to \gamma\gamma\gamma\gamma$
Two photons scatter into four photons via a fermion hexagon loop. No tree-level diagrams. Related to six-photon 3→3 by crossing.
No diagrams cataloged for this process yet.
$\gamma\gamma \to \gamma\gamma\gamma\gamma$
Two photons scatter into four photons via a fermion hexagon loop. No tree-level diagrams. Related to six-photon 3→3 by crossing.
No diagrams cataloged for this process yet.