PeterDonis's latest activity
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PeterDonis replied to the thread Is the quantum wave function a real object or a mathematical tool?.Ah, I see, the K-G equation is for the matter. It makes a huge difference. In the context of QM, "fields" refers to quantum field... -
PeterDonis replied to the thread Graduate Quantum interpretations and indistinguishable elementary particles.Usually it's taken to refer to the viewpoint that you can do QM without having to adopt any interpretation: you just do the math and... -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.Where is your quote coming from? Please give a link. -
PeterDonis reacted to DaveE's post in the thread Graduate How valid is the Block Universe theory? with
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The problem with popular science content is that it is designed to entertain, not educate. Granted many of us are entertained by... -
PeterDonis replied to the thread Is the quantum wave function a real object or a mathematical tool?.You're conflating two separate issues here. The representation of charged fields (btw, the Klein-Gordon equation does not describe the... -
PeterDonis replied to the thread Graduate Quantum interpretations and indistinguishable elementary particles."Cannot label them" is too strong a statement. If I have a single electron captured in a Penning trap, I can label it as "the electron... -
PeterDonis replied to the thread Undergrad Ellipses in Quantum Physics -- general question.That's not correct. The electrons don't have well-defined trajectories at all. -
PeterDonis reacted to .Scott's post in the thread Graduate Quantum interpretations and indistinguishable elementary particles with
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Not "wave", "wave function". It provides the weighted distribution of all the places where you might find a particle. When used that... -
PeterDonis replied to the thread Undergrad Ellipses in Quantum Physics -- general question.Why do you think ellipses are seen in atoms? Subatomic particles in atoms do not have well-defined trajectories at all. -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.See my post #23 about the difference between model and reality. The math is a model. You can never prove anything about reality with a... -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.They are generally written for other physicists, yes. Textbooks offer something somewhat in between, but unfortunately textbooks don't... -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.Referring to spacetime as a manifold in the model is not the same as claiming that the entirety of that manifold actually exists in... -
PeterDonis reacted to Dale's post in the thread Graduate How valid is the Block Universe theory? with
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Which specific implications? Some are probably parts of the interpretation (optional) but some are probably parts of the theory (not... -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.No. It's the time it takes light to travel from whatever emitted it, to you. -
PeterDonis replied to the thread Graduate How valid is the Block Universe theory?.Then I would recommend adopting a much tighter definition, something more like what I described (you want to be looking at textbooks and...