pines-demon's latest activity
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Ppines-demon reacted to A. Neumaier's post in the thread I A very interesting paper on orthodox quantum mechanics with
Informative.
Beck, G. (2025). How to be an orthodox quantum mechanic. https://arxiv.org/abs/2504.20597 From the abstract: From the conclusion: -
Ppines-demon reacted to phinds's post in the thread I What Are the Limits of the Universe According to Cosmologists? with
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If it is infinite now then it HAD to be infinite at the time of the singularity because you can't get from finite to infinite The... -
Ppines-demon reacted to gentzen's post in the thread I Is there a bad intuition or bad explanation in quantum entanglement? with Like.
bhobba first brought up that paper in 2021. What WernerQH refers too was probably in August 2025. He also brought it up on other...
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Ppines-demon replied to the thread I Is there a bad intuition or bad explanation in quantum entanglement?.Was there a previous discussion on this paper?
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Ppines-demon reacted to Demystifier's post in the thread I Do ensemble-based predictions truly describe real finite systems? with Like.
There is a simple but general principle how to determine whether a statistical ensemble describes well a real single system. The...
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Ppines-demon reacted to WernerQH's post in the thread I Is there a bad intuition or bad explanation in quantum entanglement? with Informative.
A while ago @bhobba pointed to an interesting paper by T Padmanabhan: "Obtaining the Non-relativistic Quantum Mechanics from Quantum...
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Ppines-demon replied to the thread I Is there a bad intuition or bad explanation in quantum entanglement?.There might be some rigorous way to check, but the fact that we have many examples, makes it obvious that the two theories coincide at...
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Ppines-demon replied to the thread I Need Help on Particle Spin.This question looks like if you were asking for why are particles spinning, do not confuse spin (intrinsic quantum property) with...
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Ppines-demon replied to the thread I Commutation of operators for particle in a box.My bad, I meant differentiable.
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Ppines-demon replied to the thread I Commutation of operators for particle in a box.The potential is not a function that is differentiable in the usual way (at least not for the infinite well, for the finite well you...
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Ppines-demon replied to the thread I Commutation of operators for particle in a box.Well usually ##[f(x),p]=i\hbar \partial f/\partial x ##, for a function ##f(x)##, but the potential here is kind of troublesome.
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Ppines-demon reacted to phinds's post in the thread I Is there a bad intuition or bad explanation in quantum entanglement? with Like.
QM is KNOWN to be incomplete, although not regarding entanglement (I make no argument either way on that) but rather because it cannot...
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Ppines-demon replied to the thread I Is there a bad intuition or bad explanation in quantum entanglement?.Here is a usual scheme for entanglement There are two entangled particles. Alice receives one of the particles, Bob receives the other...
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Ppines-demon reacted to Demystifier's post in the thread Book recommendation after Sakurai Modern Quantum Physics with Like.
Maybe Atkinson and Johnson, Exercises in Quantum Field Theory. It's like a textbook written completely in the form of completely solved...
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PThere was another raptor hiding in the bushes, just like in the film.