Quantum Entropy Theory Links Gravity, Dark Matter, and Cosmic Expansion

In a study published in Physical Review D, Professor Ginestra Bianconi at Queen Mary University of London introduces a new framework linking gravity to quantum entropy, potentially bridging quantum mechanics and general relativity. This theory, developed in the UK, reinterprets spacetime metric as a quantum operator, capturing the interaction between spacetime geometry and matter. The research introduces an entropic action, quantifying differences between spacetime and matter-induced metrics, leading to modified Einstein equations. These equations predict a small, positive cosmological constant, aligning with observations of the universe's accelerated expansion. A key element is the G-field, an auxiliary field that could offer new interpretations of dark matter. Professor Bianconi suggests the G-field might be a candidate for dark matter, potentially resolving discrepancies between theoretical predictions and observed cosmic expansion. This work proposes that quantum gravity has an entropic origin. Further research is needed to explore the full implications of this theory.