Dorau and Much Derive Einstein's Equations From 1995 Quantum-Entropy Framework
Updated
Updated · Sharjah24 · Oct 8
Dorau and Much Derive Einstein's Equations From 1995 Quantum-Entropy Framework
3 articles · Updated · Sharjah24 · Oct 8
Summary
A new paper by Philipp Dorau and Albert Much derives the semiclassical Einstein equations directly from quantum theory, replacing the classical thermodynamic assumptions used in earlier approaches.
Quantum relative entropy is the key tool: by comparing empty space with matter-filled space, the authors show the information difference tracks matter's energy and fixes how spacetime must curve.
That result extends Ted Jacobson's 1995 argument, which linked gravity to thermodynamics near horizons, by grounding the derivation in quantum information rather than classical heat-and-entropy concepts.
The work strengthens the idea that gravity may emerge from quantum information at large scales, offering a new route toward quantum-gravity research, especially in regimes such as black holes.