Timeline for What does it mean to take the diagonal of the group $SU(2) \times SU(2) $?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Sep 10, 2015 at 14:38 | comment | added | Vít Tuček | I still think that the group action is the same. What differs is the weight coordinates by which you denote this action and that is because you have a 2-rank group instead of 3-rank one. | |
| Sep 10, 2015 at 14:28 | comment | added | Marion | Well, the fields change transform differently under the twisting. This is what I meant. I want to understand how this happens. | |
| Sep 10, 2015 at 13:45 | comment | added | Vít Tuček | My (rather poor) understanding of physics (jargon) is that the fields doesn't change representation. Merely, you just forget the action of $SU(2)_R \times SU(2)_I$ and remember from it only the action of the diagonal subgroup. | |
| Sep 10, 2015 at 13:37 | comment | added | Marion | Hi, it is physics notation. Thanks for your answer but I think I will require something more closely related to the way the twist works and how the fields change representation. | |
| Sep 10, 2015 at 13:10 | history | answered | Vít Tuček | CC BY-SA 3.0 |