Roberto Pavani's latest activity
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Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Fair point, let me sharpen the example. Replace the two coins with two entangled qubits (singlet state). Now the combinatorially... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Thank you for the clarification on terminology, I agree that "decoherence has occurred" is more precise than "not in superposition."... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Fair enough, whether it's a strict continuum or a countable infinity is probably not essential to the point, and that's just for a... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Thank you for confirming the recoil decoherence. But then, since the recoil can occur in any direction on the sphere, doesn't that imply... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".But the particle doesn't need a local detector, sooner or later it will interact with something, even if it takes eons. The direction of... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Let me simplify with an even cleaner example: alpha decay. ²³⁸U → ²³⁴Th + α One nucleus. One alpha particle flies off. In which... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Following #48: so the number of branches can be a continuous infinity. My estimate of 2^(10²⁴⁵) in #29 was potentially wrong, but still... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".My estimate in #29 uses the same logic as the standard vacuum energy calculation that gives the 10¹²⁰ cosmological constant problem... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".Expanding on this point (if I understand MWI): if we associate even a single binary degree of freedom to each spacetime "slot" at the... -
Roberto Pavani reacted to PeterDonis's post in the thread Undergrad "The wavefunction never collapses" with
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Which is irrelevant to the MWI, because the MWI says that it only takes one run of the 1000 coin tosses experiment to get the 1000 heads... -
Roberto Pavani reacted to PeterDonis's post in the thread Undergrad "The wavefunction never collapses" with
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No, you're seeing an objection that many others (myself included) also see to the MWI. -
Roberto Pavani reacted to PeroK's post in the thread Undergrad "The wavefunction never collapses" with
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PS it's also not clear how our conscious experience arises from MWI. In a collapse interpretation, QM is a model for a single universe... -
Roberto Pavani reacted to PeroK's post in the thread Undergrad "The wavefunction never collapses" with
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Yes, in MWI there are possibly branches where people are throwing away their physics books. However: there is no way to distinguish... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".In a single universe, yes, once every ~2^1000 repetitions. But in MWI, that branch exists right now, at every branching. You don't need... -
Roberto Pavani replied to the thread Undergrad "The wavefunction never collapses".In classical coin tossing, only one sequence is realized. In MWI, all sequences are realized. The question isn't 'why is 1000 heads...