Timeline for The idea of analytical continuation method to solve the Klein-Gordon equation, how and why?
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| Jul 27, 2018 at 22:00 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
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| Apr 13, 2017 at 12:39 | history | edited | CommunityBot |
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| Mar 16, 2017 at 14:09 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
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| Sep 28, 2016 at 19:15 | answer | added | user130529 | timeline score: 1 | |
| Sep 26, 2016 at 3:23 | comment | added | Sean E. Lake | You can have a Dirac delta function that works with a rotation in complex coordinates, but it is decidedly non-analytic: $$\delta(x) = \lim_{\sigma\rightarrow 0} \frac{1}{\sigma\sqrt{2\pi}} \exp\left(-\frac{x^*x}{2\sigma^2}\right). $$ It, also, would not spit out a factor of $i$. | |
| Sep 26, 2016 at 1:10 | answer | added | Sean E. Lake | timeline score: 0 | |
| Sep 24, 2016 at 7:58 | comment | added | flippiefanus | Part of the problem could be the Dirac delta with an imaginary argument. What happens if one expresses Dirac delta in terms of its Fourier transform and then changes the variable to an imaginary number? The result does not seem to give a Dirac delta anymore. | |
| Sep 24, 2016 at 6:43 | comment | added | an offer can't refuse | @flippiefanus It is, but my confusion is about the details about the analytical continuation. The listed questions and the concerns. For example, are the second attempt correct? why not equal to the first one. Why $\sqrt{-1}=i$ and $\sqrt{-1}=-1$ give different result, which one to choose, etc... | |
| Sep 24, 2016 at 5:00 | comment | added | flippiefanus | Have you considered the Wick rotation? The analytic continuation in attempt 1 looks very similar to the Wick rotation to me. | |
| Sep 22, 2016 at 12:38 | history | tweeted | twitter.com/StackPhysics/status/778936574109188097 | ||
| S Sep 22, 2016 at 4:53 | history | bounty started | an offer can't refuse | ||
| S Sep 22, 2016 at 4:53 | history | notice added | an offer can't refuse | Canonical answer required | |
| Sep 19, 2016 at 12:19 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
edited tags
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| Sep 19, 2016 at 10:56 | history | edited | an offer can't refuse | CC BY-SA 3.0 |
layout edit and try to make the question clearer.
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| Sep 19, 2016 at 9:53 | history | asked | an offer can't refuse | CC BY-SA 3.0 |