Time in relativistic and non relativistic quantum mechanics. So apparently there are de Broglie-Bohm variants of QFTs. I’m unsure if these are full QFTs i.e. they can reproduce the standard model. I am unsure how exactly these theories work. But the theories would be noncal w/ hidden variables, as with classical Bohmian mechanics which is IMO a bad sign. But if it can reproduce the standard model, and I don’t know if they can, then Bohmian mechanics is much more plausible than I thought. Even this boosts it substantially IMO. @the gears to ascension
Please fill this newb in a bit more — is QFT Great and Correct? Why? When did that happen?
Edit: I am more confused now… Apparently QFT is what I learned in my quantum class but we didn’t touch relativity. This term is overloaded? …. In any case, the supposed compatibility with relativity seems good if I understand correctly. (I was trying to read some of those same webpages maybe a year ago but tbh I never understood why squaring the quantum-vs-relativity math was considered so important if they don’t make contradictory predictions in physically possible experiments. That’s an entirely separate discussion ofc.)
QFT is relativistic quantum mechanics with fields i.e. a continuous limit of a lattice of harmonic oscillators, which you may have encountered in solid state theory. It is the framework for the standard model, our most rigorously tested theory by far. An interpretation of quantum mechanics that can’t generalize to QFT is pretty much dead in the water. It would be like having an interpretation of physics that works for classical mechanics but can’t generalize to special or general relativity.
(Edited to change “more rigorously” → “most rigorously”.)
IIRC pilot wave theory doesn’t work for QFTs which is a big failure.
EDIT: I stand corrected. See:
QFT as pilot-wave theory of particle creation and destruction
Bohmian Mechanics and Quantum Field Theory
Relativistically invariant extension of the de Broglie-Bohm theory of quantum mechanics
Making nonlocal reality compatible with relativity.
Time in relativistic and non relativistic quantum mechanics.
So apparently there are de Broglie-Bohm variants of QFTs. I’m unsure if these are full QFTs i.e. they can reproduce the standard model. I am unsure how exactly these theories work. But the theories would be noncal w/ hidden variables, as with classical Bohmian mechanics which is IMO a bad sign. But if it can reproduce the standard model, and I don’t know if they can, then Bohmian mechanics is much more plausible than I thought. Even this boosts it substantially IMO. @the gears to ascension
Please fill this newb in a bit more — is QFT Great and Correct? Why? When did that happen?
Edit: I am more confused now… Apparently QFT is what I learned in my quantum class but we didn’t touch relativity. This term is overloaded? …. In any case, the supposed compatibility with relativity seems good if I understand correctly. (I was trying to read some of those same webpages maybe a year ago but tbh I never understood why squaring the quantum-vs-relativity math was considered so important if they don’t make contradictory predictions in physically possible experiments. That’s an entirely separate discussion ofc.)
QFT is relativistic quantum mechanics with fields i.e. a continuous limit of a lattice of harmonic oscillators, which you may have encountered in solid state theory. It is the framework for the standard model, our most rigorously tested theory by far. An interpretation of quantum mechanics that can’t generalize to QFT is pretty much dead in the water. It would be like having an interpretation of physics that works for classical mechanics but can’t generalize to special or general relativity.
(Edited to change “more rigorously” → “most rigorously”.)