meta user
network profile
| bio | website | |
|---|---|---|
| location | New York City | |
| age | 39 | |
| visits | member for | 1 year, 9 months |
| seen | 10 hours ago | |
| stats | profile views | 23,796 |
I do not participate on this site any longer, except to respond to comments regarding my own text, if that text is unavailable in another form. I do not accept the political moderation atmosphere here, it is not compatible with open science.
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Jan 4 |
comment |
Interpretation of the Random Schrödinger Equation @JuanSebastianTotero: I guess the Parisi-Sourlas papers from the 70s, but this is original literature, and there is a dimensional reduction in these papers that I heard didn't work properly (hearsay--- I don't know why it fails, or if it does fail for sure for myself). I never learned it from literature, but a nice place where there is some discussion is in a recent turbulence paper by Yaron Oz, where he shows the relation between the corr. fns. of the noise and the superpotential (although I don't remember if he explicitly used SUSY language). I am sorry, I am out of the loop, there's a ton. |
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Jan 4 |
comment |
Is a hard drive heavier when it is full? the problem is that both empty and full have the same information entropy, if you know what bits are written on the drive in both cases. It's not the value, but the randomness, that tells you the entropy. So I can't make sense of any answer except "no, they weigh the same". |
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Jan 4 |
comment |
Quantum Zeno effect and unstable particles @Anixx: Even a passive detector collapses the particle's wavefunction to the extent it detects the particle is outgoing. |
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Jan 4 |
comment |
The Impossibility of Solving $N$-Body Problem @PaulJ.Gans: The problem has chaotic sectors for n>2, but these don't fill the majority of the phase space. The KAM regions are larger, at least until you get to some dozens of particles, and then the generic behavior tends to become ergodic. This is something people notice when doing simulations. |
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Jan 4 |
comment |
How many bits are needed to simulate the universe? @Anixx: you are talking about compression, and this is not appropriate for encoded quantum wavefunction. How are you supposed to compress wavefunction information? For the general case of a quantum computer it is certainly impossible. Anyway, I agree that if the universe is classical, it's what you say in your answer, nothing I said disagrees with you, but you are giving the number of qubits, not the number of bits, in the quantum holographic description. |
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Jan 4 |
comment |
Can bosons that are composed of several fermions occupy the same state? The non-product state is not "the same state", as you say, because it's not a product, but for a BEC, it's very close to a product: the entanglement is only visible in the part of the wavefunction very close to the diagonal. For a general Schrodinger field, the shared wavefunction is the VEV of the field, product or not. |
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Dec 28 |
awarded | Revival |
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Dec 23 |
awarded | Revival |
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Dec 19 |
awarded | history |
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Dec 11 |
awarded | Revival |
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Dec 11 |
awarded | Nice Answer |
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Dec 6 |
awarded | Nice Answer |
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Dec 5 |
awarded | Outspoken |
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Dec 4 |
comment |
Can bosons that are composed of several fermions occupy the same state? @lurscher: The volume of the wavefunction of the fermions is in the dimension of the relative coordinate, while the volume of the composite is in the center of mass coordinate. |
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Dec 4 |
revised |
Cosmology questions from a novice meta politics |
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Dec 4 |
revised |
Euler equation of fluid dynamics meta politics |
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Dec 4 |
revised |
What is the meaning of the word “particle” in particle physics? meta politics |
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Dec 4 |
revised |
Fermi surface nesting and CDW/SDW/SC orders put meta political commentary |
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Dec 4 |
revised |
Nuclear fusion: what causes this “resonance” peak? put political commentary |
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Dec 4 |
awarded | Constituent |
