Classical Electrodynamics in a Unified Theory
  Some consequences of a fully classical unified theory of gravity and electromagnetism are worked out for the electromagnetic sector such as the occurrence of classical light beams with spin and orbital angular momenta that are topologically quantized in units of $q_e q_m=\sigma$, independent of the beam size. Empirical fits require $\sigma = \hbar$. The theory also predicts a generalized coherency matrix whose consequences are testable. 
Partha Ghose, Anirban Mukherjee
physics.optics