Recent content by Demystifier

I guess we are talking about nonrelativistic QM, not about QFT. If you have two particles, each moving in 3 dimensions, you can think of it as one particle in 6 dimensions. Write the path integral by pretending it's one particle in 6 dimensions, and you will get the right result.

The observables such as energy, momentum, angular momentum and charge are conserved in the sense that the corresponding operator does not have an explicit time dependence. Let ##A## be any observable conserved in that sense. If you measure A (and hence collapse the state) and then measure A...

That's right.

Right, but decoherence cannot be properly understood without its derivation. You can describe decoherence by phenomenological models without explicitly taking into account the environment, but such models lack deep understanding.

Logical thinking certainly helps in being a lawyer.

Well, some engineers also need to solve PDE's, don't they?

I haven't seen that threads, what do they say?

I solve PDE's for work quite often. But I'm a professional scientist, so I guess it doesn't count. :D What do people with math or physics major do if they do not become scientists? I guess most of them become programmers of a kind, so maybe solving PDE's is not something what most of them do.

Yes. What made you think that it might not be the case?

Both classical and semiclassical gravity predict that they are impossible by the 3rd law of black hole thermodynamics.

The holographic principle is best understood in AdS/CFT form, and AdS is continuous, ergo ...

That's a big problem in most fundamental research nowadays. The goal of fundamental research should be the increase in understanding, not the increase in the number of published papers. Unfortunately, this is often not the case. Sorry for the off topic!

50 days free access to the published version: https://www.sciencedirect.com/science/article/pii/S0378437124002668?dgcid=author

Eisberg Resnick https://www.amazon.com/Quantum-Physics-Molecules-Solids-Particles/dp/047187373X?tag=pfamazon01-20 puts more emphasis on concepts than on formalism.

It goes from the detector region to the region outside of detector.