Demystifier's latest activity
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Demystifier replied to the thread I The Extended Wigner's Friend Scenarios.That's a good question. It would be so if the reversal of the wave function was ideal, meaning that it is evolved with the Hamiltonian... -
Demystifier replied to the thread I Wigner's friend and quantum tunneling.I can have it both ways, to understand it one just has to be a little bit more precise. First let me define 3 systems I am talking...
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Demystifier replied to the thread I The Extended Wigner's Friend Scenarios.Yes, but that's not needed for the extended Wigner friend experiment. The experiment only involves a reversion (or other kinds of...
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Demystifier replied to the thread I Wigner's friend and quantum tunneling.Of course there is decoherence. The measured quantum system is the friend and her laboratory, but this is measured by Wigner and his...
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Demystifier replied to the thread I The Extended Wigner's Friend Scenarios.Of course it is. Clearly, the wave function can be reversed for one or few particles in any interpretation of QM, it must be so because...
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Demystifier reacted to Sambuco's post in the thread I The Extended Wigner's Friend Scenarios with
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That's not entirely true. There are interpretations where decoherence can be reversed (at least in principle) for which AOE still holds... -
Demystifier replied to the thread I The Extended Wigner's Friend Scenarios.Yes, universality is a crucial assumption in all those Wigner-friend thought experiments.
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Demystifier replied to the thread I Wigner's friend and quantum tunneling.I don't think that's essential. As explained here...
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Demystifier replied to the thread I The Extended Wigner's Friend Scenarios.The review https://arxiv.org/abs/2308.16220 argues that, among the many extended Wigner-type thought experiments considered recently...
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Demystifier replied to the thread I Wigner's friend and quantum tunneling.And in post-modern understanding of QM, it's considered to be a reductio ad absurdum showing that objective facts don't exist. 🙃
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Demystifier replied to the thread I Wigner's friend and quantum tunneling.You seem to be talking about the quantum Zeno effect. If there is a measuring apparatus inside the box which causes the quantum Zeno...
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Demystifier replied to the thread B Simple mass/scale puzzle.The formalization is not only for its own sake. It's very useful when one has to solve a more complicated problem of the same type. When...
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Well I can't say I didn't ask for that... .
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Demystifier replied to the thread B Simple mass/scale puzzle.So far nobody formalized it, so let it be me. Let me denote the mass on the left as ##m_1## and the mass on the right as ##m_2##. The...
