Timeline for Covariance in gauge theories: why should the Lagrangian be gauge invariant?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jul 21, 2021 at 21:48 | comment | added | Gravity_CK | very well written, particularly the last example | |
| Mar 17, 2019 at 19:13 | comment | added | JohnK | So you're saying that the empirical motivation for local gauge invariance is the masslessness of the photon? I heard that that local gauge invariance is the reason we know the photon is exactly massless (and not just very, very light), but it sounds like you're saying that explanation is backwards. Do I understand you correctly? | |
| Feb 3, 2018 at 12:41 | vote | accept | StarBucK | ||
| Nov 25, 2017 at 16:58 | history | answered | ACuriousMind♦ | CC BY-SA 3.0 |