Recent content by JohnH

Yeah, just trying to answer my own question last minute. Probably better off waiting for an answer. Anyway, thank you for it.

So I understand that fermions are anti-symmetric under exchange, but in the contexts I've seen this explained they were always talking about two particles, or at least two wavefunctions. I'm curious how this works when there are three or more particles. Is any two given pairs of those 3+...

Right! Haha, you know what I meant.

Bell's inequality is a fact, not a theory. You'll hear no argument from me on the existence of probability in nature.

This was what I was struggling to come to grips with but this is the clearest, and most reasonable explanation of why it makes sense I've heard yet. For some reason it never quite clicked that we were more or less ignoring "what is going on."

Again, I totally agree.

It would mean that mathematics can map one to one and onto physical reality. And if this discussion is going outside the bounds of the forum rules, I apologize. Just answering a question.

I wasn't surprised that physicists didn't believe in what you might call intuitive, classical physics. I was surprised that physicists didn't believe in probability. For example, Demystifies said this about probability and I'm assuming it is the most common interpretation Is it really all that...

I find this quite confusing. So you're saying that QED, the most successful theory in physics--how do you say it--almost coincidentally gets the correct answer? You're saying that this convoluted mathematical process predicts the right outcome and yet has absolutely nothing to do with the actual...

So in other words, in places in a Feynman Diagram where emission or absorption occurs, it's not that anything has been created or destroyed but instead that it always existed or continues to exist in the vacuum state?

If a bosonic field is probabalistic, and if it can be emitted (suddenly coming into existence), what determines its probability distribution when it is emitted from a fermion? In other words, one thinks (or at least I think) of a fermion field as already being in existence and already having...

I'm having trouble following a proof of what happens when the Dirac Lagrangian is put into the Euler-Lagrange equation. This is the youtube video: and you can skip to 2:56 and pause to see all the math laid out. I understand the bird's eye results of the Dirac Lagrangian having an equation of...

Yeah, that's what I was trying to say in a hamfisted, less precise way. The following excerpt from the linked paper, seems to sum things up nicely: "The use of the center of mass for establishing the classicality of a quantum state has some promising advantages. The first one is related to the...

How successful is this approach?

Imprecise language. I mean the wavefunction for a multi-particle system has different arguments for each particle all of which are orthogonal to each other. I found this paper: https://iopscience.iop.org/article/10.1088/1367-2630/aa719a. It seems to be saying more or less the same thing you...