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| bio | website | |
|---|---|---|
| location | ||
| age | 66 | |
| visits | member for | 2 years, 6 months |
| seen | Jan 10 '12 at 15:28 | |
| stats | profile views | 167 |
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Mar 25 |
awarded | Nice Question |
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Jan 4 |
awarded | Nice Answer |
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Jan 1 |
awarded | Nice Answer |
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Nov 29 |
awarded | Popular Question |
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Nov 2 |
awarded | Yearling |
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Oct 23 |
awarded | Good Answer |
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Jun 8 |
awarded | Caucus |
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Jan 5 |
awarded | Taxonomist |
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Nov 2 |
awarded | Yearling |
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Oct 3 |
comment |
Is it true that quantum mechanics technically allows anything to happen? You know, to me this is actually an interesting question, which it will take some precision and subtlety to discuss properly. As an aside, what is the level of education of the questioner, and his/her friends? I have known a least one biology Nobel Laureate who disagreed with me about this. A way of restating the question might be, "Are all quantum mechanical propositions necessarily probabilistic?" Lederberg said yes. I very much appreciate the comment below, that events with 0 measure could also actually happen. |
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Sep 10 |
comment |
Why are the antimatter compositions of neutrons and protons different? Why by about 1%? References? I assume that as well as gluons, a considerable amount is also carried as kinetic energy of the various particles. I would accept these two answers, but would like to first ask some "ab initio" people for their results, which may be better because of all the nonlinearities at the low quark energies involved. By the way, how low is that in nuclear matter at rest? |
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Sep 1 |
revised |
Why would Antimatter behave differently via Gravity? deleted 238 characters in body |
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Aug 23 |
comment |
What are the average matter, antimatter, and binding energy composition of protons and neutrons? Having read a (very) little, I now assume that the 0 momentum limit will require ab initio calculations because at 0 momentum the situation is highly non linear and non peturbative approaches must be used. |
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Aug 23 |
comment |
What are the average matter, antimatter, and binding energy composition of protons and neutrons? Thank you for this very patient and helpful answer, which teaches me much. Is there anyway to extrapolate this down to 0 momentum probes, e.g. nucleons in a glass of water? Does nuclear structure in the higher elements change the zero momentum limit situation much? For the zero momentum limit, are we forced back to ab initio calculations? |
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Aug 22 |
comment |
What are the average matter, antimatter, and binding energy composition of protons and neutrons? Here is an example of the type of answer I was looking for, from quark.phy.bnl.gov/~pisarski/talks/Colloquia/Fodor.pdf (last slide) "95% of the mass of a proton comes from the kinetic energy within the proton: very different from any other mass" The standard model of particle physics (most particularly the theory of strong interaction, QCD) can explain this phenomena via a full ab-initio calculation of the masses. (controlling all systematic uncertainties) |
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Aug 21 |
comment |
What are the average matter, antimatter, and binding energy composition of protons and neutrons? This is rather beyond me, but don't I want something like lim(scale -> infinity) |
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Aug 21 |
revised |
What are the average matter, antimatter, and binding energy composition of protons and neutrons? added 374 characters in body |
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Aug 21 |
asked | What are the average matter, antimatter, and binding energy composition of protons and neutrons? |
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Aug 21 |
asked | Why are the antimatter compositions of neutrons and protons different? Why by about 1%? References? |
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Aug 19 |
revised |
Why would Antimatter behave differently via Gravity? added 350 characters in body |
