3 ms·
Quantum mechanics may go against common sense in some aspects but temporal causality is not one of them. https://philarchive.org/rec/ELLWDC https://philarchive
by kgwgk 5y ago
Quantum mechanics may go against common sense in some aspects but temporal causality is not one of them.
https://philarchive.org/rec/ELLWDC https://philarchive.org/rec/ELLWDC
“Why Delayed Choice Experiments do NOT imply Retrocausality” - David Ellerman
“There is a fallacy that is often involved in the interpretation of quantum experiments involving a certain type of separation such as the: double-slit experiments, which-way interferometer experiments, polarization analyzer experiments, Stern-Gerlach experiments, and quantum eraser experiments. The fallacy leads not only to flawed textbook accounts of these experiments but to flawed inferences about retrocausality in the context of delayed choice versions of separation experiments.”
- dekhn 5y agothat article was written by this guy: https://en.wikipedia.org/wiki/David_Ellerman https://en.wikipedia.org/wiki/David_Ellerman who I do not think is actually an authority on this (QM appears to be just one of the fields he's mathematically involved in). I'm gonna trust the experimentalists on this one. Not also I didn't say retrocausality, I said intuition about temporal causality, which is distinct.
- kgwgk 5y agoOk, I don't know what are your belief and intuition about temporal causality that you need to suspend. I don't think there is any mystery. Another reference: https://arxiv.org/abs/1905.03137 https://arxiv.org/abs/1905.03137 "The 'Delayed Choice Quantum Eraser' Neither Erases Nor Delays" - R. E.Kastner She has published books on the foundations of quantum mechanics (not a experimentalist, though...).
- dekhn 5y agoI'm not interested in physicist/philosophers. Only in the people who run design, set up, and run the experiments. You're watching a bunch of people with strong opinions about what QM theory implies for the real world. I come from a different direction: I'm recognizing that most of my intuitions about physics, which come from large particles (classically modelled atoms), are just completely and totally useless. And that ncludes the temporal ordering of events.