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seen Jan 10 '12 at 15:28

Feb
12
comment Can Noether's theorem be understood intuitively?
Well, Vladimir's question/answer is now clearer to me. He apparently wants to know the relationship between Noether's therem and what Landau calls additive, conserved quantities. Relating it back to the original question, what parts of Noether's Thm. imply that the resultant integrals of motion are additive? This obviously relates to the intuitive understanding of the theorem and its interpretation, assuming the above is true.
Feb
11
comment Can Noether's theorem be understood intuitively?
Vladimir. Please cite the pages or sentences in Landau's book to which you are referring. Of course integrals of motion are not just numerical solutions. Are you implying that they somehow are?
Feb
11
comment Can Noether's theorem be understood intuitively?
I have a suggestion. Lets think of question(s) we can ask on Math.stackexchange to help clear all this up. Something like "What is the difference between integrals of motion as equations and isolating integrals? Do Noetherian Symmetries always yield isolating integrals? Why? What is the connection between additive symmetries (in particles) and Noetherian symmetries?" Let the mathematicians sort it out. Furthermore they are very polite. In a way, it is like going back to school. So this comment is a request to help perfect the question(s) we or I might ask on math.stackexchange
Feb
3
awarded  Nice Answer
Jan
31
awarded  Self-Learner
Jan
29
comment Myths in the history of Physics
But wasn't he surprised when Born told him that he had just rediscovered matrix multiplication?
Jan
29
answered is the Z boson one entity or are there as many entities as decay pairs, but they are equivalent and lumped together
Jan
29
revised Myths in the history of Physics
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29
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29
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Jan
28
comment What categorical mathematical structure(s) best describe the space of “localized events” in “relational quantum mechanics”?
Ok, it looks like an open question, and the answer gives pointers to the open literature. So I accept it as the best answer possible at this time. I will read the papers and do my low level best to summarize, but this site is not so much for open questions.
Jan
28
accepted What categorical mathematical structure(s) best describe the space of “localized events” in “relational quantum mechanics”?
Jan
27
comment How can I measure the mass of the Earth at home?
Eratosthenes's experiment can be done, however, by two kids at two homes via Skype. In 300BC it involved two big technologies of his day, i.e. the calendar and the mail. His experiment apparently started when he, as librarian at Alexandria got a letter from someone saying that on a certain day, he could see the sun reflected from the water at the bottom of a deep vertical well in his home town at noon. Eratosthenes did the experiment and the math. Today we could use Skype and kids in different places, vertical plumb lines, protractors (Greek?!), and do the math. Don't give up so easily.
Jan
25
comment Why is cold fusion considered bogus?
10 kev works because of tunneling.
Jan
25
comment Is the “consistent histories” interpretation of QM a “many worlds interpretation” in disguise?
I know your question is more philosophical, i.e. whether there is some theorem showing the two languages are equivalent, but on the practical side, the consistent histories approach gave rise to the first estimated for the time until loss of coherence. This was refined in the work of many. Does the many worlds interpretation do that, even today?
Jan
25
revised Why is cold fusion considered bogus?
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25
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25
revised Why is cold fusion considered bogus?
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25
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25
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