Science News: A great many papers are appearing about ER=EPR and other work relating gravity — the geometry of spacetime — to quantum entanglement. by Tom Siegfried
'In one recent paper, Caltech physicists ChunJun Cao, Sean M. Carroll and Spyridon Michalakis attempt to show how spacetime can be “built” from the vast network of quantum entanglement in the vacuum. “In this paper we take steps toward deriving the existence and properties of space itself from an intrinsically quantum description using entanglement,” they write. They show how changes in “quantum states” — the purely quantum descriptions of reality — can be linked to changes in spacetime geometry. “In this sense,” they say, “gravity appears to arise from quantum mechanics in a natural way.”
'Cao, Carroll and Michalakis acknowledge that their approach remains incomplete, containing assumptions that will need to be verified later. “What we’ve done here is extremely preliminary and conjectural,” Carroll writes in a recent blog post. “We don’t have a full theory of anything, and even what we do have involves a great deal of speculating and not yet enough rigorous calculating.”'
"Copenhagen vs Everett, Teleportation, and ER=EPR" by Leonard Susskind here
"Space from Hilbert Space: Recovering Geometry from Bulk Entanglement" by ChunJun Cao, Sean M. Carroll, and Spyridon Michalakis here