• The theory also predicts that the gravitational constant is actually the sum of the contributions of the three gravity particles.
• So, normally we just have the graviton contribution.
• But in areas where photons are transformed into gravitophoton pairs, there is a gravitophoton contribution to the gravitational constant.
• Furthermore the repulsive gravitophotons can interact with gravitons to produce the quintessence particles which also contributes to the gravitational constant. 
• So in regions where gravitophotons are being produced, the local gravitational constant is not necessarily a constant.