Timeline for Physical meaning of gauge choice in electromagnetism
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Dec 9, 2017 at 16:24 | comment | added | Qmechanic♦ | Well, the concept of restricted type of gauge symmetries is by itself quite powerful in QFT. It e.g. yields Noether identities. | |
| Dec 9, 2017 at 16:08 | comment | added | tparker | @Qmechanic Doesn't the restriction that you state in your first footnote make your updated answer vacuous? You're now just saying that for the class of gauge theories for which gauge transformations are unphysical, gauge transformations are unphysical. This is true but tautological. | |
| Dec 9, 2017 at 16:01 | comment | added | tparker | @EmilioPisanty Yes, but Qmechanic's original answer didn't have that caveat, and so ran the risk of being interpreted as applying to all gauge theories, including nonabelian. | |
| Dec 9, 2017 at 11:08 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
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| Dec 9, 2017 at 10:10 | vote | accept | JackI | ||
| Dec 8, 2017 at 18:34 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
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| Dec 8, 2017 at 18:06 | comment | added | Emilio Pisanty | @tparker OP is asking explicitly about electromagnetism, which is immune from any nonabelian subtleties. | |
| Dec 8, 2017 at 17:55 | comment | added | tparker | I don't think this is correct in the case of nonabelian gauge quantum field theory; see my answer. | |
| Dec 8, 2017 at 17:34 | comment | added | JackI | Ok, so I can consider it just a mere mathematical artifact useful to make calculations? | |
| Dec 8, 2017 at 17:33 | history | answered | Qmechanic♦ | CC BY-SA 3.0 |