Penrose interpretation of quantum mechanics

The Penrose interpretation is a prediction by Sir Roger Penrose (born 1931) about the relationship between quantum mechanics and general relativity. Penrose proposes that a quantum state remains in superposition until the difference of space-time curvature attains a significant level.

Penrose's idea is inspired by quantum gravity, because it uses both the physical constants ${\displaystyle \scriptstyle \hbar }$ and ${\displaystyle \scriptstyle G}$. It is an alternative to the Copenhagen interpretation, which posits that superposition fails when an observation is made (but that it is non-objective in nature), and the many-worlds interpretation, which states that alternative outcomes of a superposition are equally "real", while their mutual decoherence precludes subsequent observable interactions.

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