Timeline for $U(n)$ vs $SU(n)$ Symmetry and Tracelessness - Chargeless Gauge Bosons
Current License: CC BY-SA 4.0
13 events
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| Jul 18, 2023 at 21:22 | comment | added | Cosmas Zachos | Indeed, yes. In physics, we reason after the facts, not before them! That's what they mean by calling it an experimental science. Most Platonic overextensions have famously fallen flat on their face! | |
| Jul 18, 2023 at 19:35 | history | reopened |
John Rennie Qmechanic♦ symmetry Users with the symmetry badge or a synonym can single-handedly close symmetry questions as duplicates and reopen them as needed. |
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| Jul 18, 2023 at 19:16 | comment | added | 18th Shard | So in other words, there is not any real reason for the lack of these bosons except that they don't seem to exist in the universe? | |
| Jul 18, 2023 at 19:03 | comment | added | Cosmas Zachos | Extra U(1)s would act like extra variant EM forces/fields, but nature chose to not realize them in practice. Nobody knows why. Nature does daffy things, and we strive to describe them as they are.... | |
| Jul 18, 2023 at 16:52 | history | edited | 18th Shard | CC BY-SA 4.0 |
added 2 characters in body
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| S Jul 18, 2023 at 16:51 | review | Reopen votes | |||
| Jul 18, 2023 at 19:36 | |||||
| S Jul 18, 2023 at 16:51 | history | edited | 18th Shard | CC BY-SA 4.0 |
Noting this is not about baryon/lepton number; narrowed question about uncharged bosons
Added to review
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| Jul 18, 2023 at 16:47 | comment | added | 18th Shard | My question is not answered by the linked question: the response there is in reference to the U(1) symmetries of baryon and lepton numbers as opposed to the more fundamental U(1) of weak hypercharge. It also does not address the physical interpretation why strong and weak symmetries don't produce long-range, uncharged bosons at all. | |
| Jul 18, 2023 at 16:21 | history | closed | Qmechanic♦ symmetry Users with the symmetry badge or a synonym can single-handedly close symmetry questions as duplicates and reopen them as needed. | Duplicate of Why is the standard model gauge group $SU(3) \times SU(2) \times U(1)$ and not $U(3) \times U(2) \times U(1)$? | |
| Jul 18, 2023 at 16:21 | comment | added | Qmechanic♦ | Possible duplicates: physics.stackexchange.com/q/536742/2451 , physics.stackexchange.com/q/116831/2451 , physics.stackexchange.com/q/119190/2451 and links therein. | |
| Jul 18, 2023 at 16:18 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
added 8 characters in body; edited tags; edited title
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| S Jul 18, 2023 at 15:52 | review | First questions | |||
| Jul 18, 2023 at 16:10 | |||||
| S Jul 18, 2023 at 15:52 | history | asked | 18th Shard | CC BY-SA 4.0 |