westurner
13 hours ago
"Classical theories of gravity produce entanglement" (2025) https://www.nature.com/articles/s41586-025-09595-7 :
> Abstract: [...] Here we extend the description of matter used in these theorems to the full framework of quantum field theory, finding that theories with classical gravity can then transmit quantum information and, thus, generate entanglement through physical, local processes.
westurner
13 hours ago
On nonlocal entanglement:
Are LEO sats necessary for wireless internet then?
westurner
13 hours ago
On gravity;
Gravity from QFT:
> This says that the standard model actually does describe the n-body orbits of the planets:
> "Perihelion precession of planetary orbits solved from quantum field theory" (2025) https://arxiv.org/abs/2506.14447 .. https://news.ycombinator.com/item?id=45220460
> There's also this:
Fluid models also predict gravity:
> "Fluid vacuum yields exact solutions to Pioneer anomaly and Mercury's perihelion (2019)" https://news.ycombinator.com/item?id=45220585
westurner
13 hours ago
NewsArticle: "Unifying physics just got harder: Study challenges fundamental test of quantum gravity" (2025) https://interestingengineering.com/science/unifying-physics-... :
> The concept at the center of this debate dates back to a 1957 proposal by Nobel laureate Richard Feynman, who suggested that if gravity could cause two massive objects to become quantumly entangled, then gravity itself must be quantum in nature. The idea has recently gained traction as advances in precision measurement make such tests experimentally feasible.
NewsArticle: "Does gravity produce quantum weirdness? Proposal divides physicists" (2025) https://www.nature.com/articles/d41586-025-03381-1