2 ms·
> most physicists simply use single words or short phrases to describe a whole vague bunch of related concepts. What the hell is “entanglement”. Actually, "ent
by pdonis 5y ago
> most physicists simply use single words or short phrases to describe a whole vague bunch of related concepts. What the hell is “entanglement”.
Actually, "entanglement" has a precise meaning in QM (a state that cannot be expressed as a product of states of subsystems). It's just that that precise meaning won't make any sense to someone who hasn't already learned a fair bit of QM, so when asked to define the term by lay people, physicists have to wave their hands.
- balsam 5y agoAha, that is my point! To quote: “The crux of the problem lies in an assumption about the structure of entanglement across the event horizon, namely, that the Hilbert space factorizes. While valid in quantum mechanics, this fails drastically in quantum field theory” https://arxiv.org/abs/1901.01149 https://arxiv.org/abs/1901.01149 So already QFT and QM are disputing..