UNIFICATION of GRAVITATION and ELECTROMAGNETISM
I unified at Quantum level, Electromagnetism and Gravitation with Ferent equation for the energy of a photon:

E = h × f + a × f

Ferent equation for photon – graviton interaction:

E = h × f + a × f - a × ν

where - a × ν is the negative energy of the graviton

ν is the frequency of the graviton

“I am the first who understood and explained Gravitation with high speed gravitons   v = 1.001762 × 10^17 m/s, with Negative Momentum, Negative Mass and Negative Energy” Adrian Ferent

https://www.researchgate.net/publication/299135595_Ferent_Gravitation_theory