Demystifier's latest activity
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Demystifier replied to the thread I Why can’t photons “pile up” to eject an electron?.If you draw the Feynman diagrams for absorption of one and two photons, you see that they have one and two vertices, respectively, so... -
Demystifier reacted to willyengland's post in the thread I Why can’t photons “pile up” to eject an electron? with
Like.
A multi-photon absorption might happen I think under extreme conditions like a strong laser. -
Demystifier replied to the thread I A very interesting paper on orthodox quantum mechanics.Pop science QM is written by actual physicists. They give the best explanation they can under the constraint of not using equations. So...
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Demystifier replied to the thread I A very interesting paper on orthodox quantum mechanics.I don't think there is any difference between QM and QFT in that sense. You can certainly think of QFT in terms of ensemble, after all...
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Demystifier reacted to syed's post in the thread I Do ensemble-based predictions truly describe real finite systems? with Like.
Thank you for the detailed explanation
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Demystifier reacted to Chestermiller's post in the thread I Entropy and configurations of microstates with Like.
In statistical thermodynamics, the following approximation is frequently used: $$\ln{(n!)}=\ln(1)+\ln(2)...\ln(n-1)+\ln(n)\approx...
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Demystifier replied to the thread I Do ensemble-based predictions truly describe real finite systems?.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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Demystifier replied to the thread I Do ensemble-based predictions truly describe real finite systems?.A canonical or grand-canonical ensemble is best understood as a small (but macroscopic) subsystem of a larger system. The larger system...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.Fair enough. But in that case people like @PeroK should specify which interpretation they have in mind when they argue that environment...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.Which is the standard interpretation. Of course, I am not advocating the standard (Copenhagen) interpretation, but I am pointing out...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.But according to standard QM the state represents a complete description of the system, there is nothing else except the state. Hence...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.I think I see now where is the problem. Many people don't understand very well how randomness arises in classical deterministic...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.The "only" part can be derived from the 7 basic rules of QM that you yourself wrote here...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.I'm not sure you do. No, that's not my argument. I'm saying that complex environment is needed to explain randomness, but this...
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Demystifier replied to the thread I Question about discussions around quantum interpretations.I already said several times, but I will repeat. Those uncontrollable stochastic features are not important for computing the...