Timeline for Why are real photons so much less efficient in carrying momentum than virtual photons?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Mar 29, 2022 at 3:45 | vote | accept | JPattarini | ||
| Mar 24, 2022 at 19:22 | comment | added | Rococo | @JPattarini I'm inclined to say that ACuriousMind's explanation works just as well classically- EM waves are constrained to a particular dispersion relation that does not apply to static fields or near-field radiation. | |
| Mar 23, 2022 at 16:56 | history | edited | Peter Mortensen | CC BY-SA 4.0 |
(Missed in the first edit summary: Use view "Side-by-side Markdown" to compare)
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| Mar 23, 2022 at 16:33 | history | edited | Peter Mortensen | CC BY-SA 4.0 |
Copy edited (e.g. ref. <en.wikipedia.org/wiki/Newton_(unit)> and <en.wiktionary.org/wiki/north_pole#Noun>). Moved some meta information to the end in order to deemphasise it (most readers will have zero interest in it) - but it really ought to be in comments.
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| Mar 23, 2022 at 5:02 | answer | added | HolgerFiedler | timeline score: -6 | |
| Mar 22, 2022 at 18:06 | history | edited | Jens | CC BY-SA 4.0 |
Force gets stronger as distance decreases.
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| Mar 22, 2022 at 15:50 | comment | added | JPattarini | @Rococo That's a great point... and I don't have a good handle on the classical answer to that either | |
| Mar 22, 2022 at 15:48 | comment | added | JPattarini | @chepner I think closer to my intent is asking why the magnetic repulsion transmitted by these virtual photons is so robust in the absence of other effects, whereas to produce that much force with real photons you'd be able to detect many other effects due to the large amount of energy involved to impart that much momentum. Whether it's done using one high energy photon or 10^30 photons, to transfer the equivalent momentum would be a tall order. | |
| Mar 22, 2022 at 13:14 | comment | added | chepner | It sounds like you are saying you need "more" real photons than virtual photons, without ever asking the question 'How "many" virtual photons are needed to produce 15 Newtons of force?' | |
| Mar 22, 2022 at 5:40 | history | became hot network question | |||
| Mar 22, 2022 at 0:19 | comment | added | Rococo | FWIW, I think that this question is just as well posed within classical E&M ("Why do static electric or magnetic fields generate strong forces so much more easily than EM waves?"), so perhaps there is nothing really "quantum" about it. | |
| Mar 22, 2022 at 0:00 | history | tweeted | twitter.com/StackPhysics/status/1506058111152500737 | ||
| Mar 21, 2022 at 22:21 | answer | added | ACuriousMind♦ | timeline score: 40 | |
| Mar 21, 2022 at 22:08 | history | edited | Níckolas Alves | CC BY-SA 4.0 |
Clearer title
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| Mar 21, 2022 at 21:39 | history | asked | JPattarini | CC BY-SA 4.0 |