Timeline for No magnetic dipole moment for photon
Current License: CC BY-SA 3.0
16 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 26, 2018 at 16:58 | answer | added | tparker | timeline score: 2 | |
| Jul 25, 2018 at 21:05 | comment | added | my2cts | @John Duffield photon spin does correspond to angular momentum, as the famous Beth experiment of 1935 shows. | |
| Jul 25, 2018 at 21:04 | comment | added | my2cts | @user27777 belatedly, electron spin does correspond to angular momentum,as does photon spin. | |
| Jul 24, 2018 at 21:31 | comment | added | user4552 | related: physics.stackexchange.com/questions/419267/… | |
| Apr 3, 2017 at 5:23 | comment | added | HolgerFiedler | @user27777 Your comment I'm using in an answer. It was the initial point to do so at all. | |
| Apr 3, 2017 at 4:52 | answer | added | HolgerFiedler | timeline score: 1 | |
| Dec 1, 2016 at 22:49 | comment | added | John Duffield | The circular-polarized photon doesn't actually spin. It's like an arrow with one set of flights behind the other. It isn't spinning like a bullet. However something else is. | |
| Aug 19, 2013 at 18:18 | history | edited | Emilio Pisanty | CC BY-SA 3.0 |
Bibliographed. DOI'd link.
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| Aug 19, 2013 at 18:10 | answer | added | Rafael | timeline score: 2 | |
| Aug 19, 2013 at 17:28 | answer | added | user4552 | timeline score: 4 | |
| Aug 19, 2013 at 16:42 | comment | added | user4552 | @JohnRennie: The Villalba-Chavez paper you linked to on researchgate is available on arxiv: arxiv.org/abs/hep-th/0609008 . They show that there is such a dipole moment in an external magnetic field, but I don't see any easy way to extract an elementary argument that it has to vanish when the external field goes to zero. | |
| Aug 17, 2013 at 6:05 | history | tweeted | twitter.com/#!/StackPhysics/status/368614528839213057 | ||
| Aug 16, 2013 at 19:32 | comment | added | user27777 | Ben, I agree with you that it's a fundamental question. If there were a simple explanation I doubt so many experimentalists would be be trying to measure it. But the best I can come up with is that the spin of the electron and photon are fundamentally different. The electron's corresponds to magnetic dipole moment while the photon's corresponds to angular momentum. | |
| Aug 16, 2013 at 19:08 | comment | added | Manishearth | Interesting, never thought about that. Are there any other particles with spin 1 but zero $\mu$? Also, might it have to do with the speed of the photon? Photons also have indeterminate relativistic mass. Or something like that. | |
| Aug 16, 2013 at 18:28 | comment | added | John Rennie | arxiv.org/abs/hep-th/0609008 | |
| Aug 16, 2013 at 17:43 | history | asked | user4552 | CC BY-SA 3.0 |