A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $\Lambda$CDM Framework

Understand

Dark energy and dark matter constitute 95% of the observable Universe.

• Yet the physical nature of these two phenomena remains a mystery.
• Einstein suggested a long-forgotten solution: gravitationally repulsive negative masses, which drive cosmic expansion and cannot coalesce into light-emitting structures.
• However, contemporary cosmological results are derived upon the reasonable assumption that the Universe only contains positive masses.