Physical interpretation of charges and casimirs for SU(2) and SU(3)

  • Thread starter Bobhawke
  • Start date
  • #1
144
0
For SU(2) rotational invariance there is a clear interpretation of what all the generators mean. They correspond to operators whose eigenvalues are some observable. The noether charges correspond to the x,y and z components of angular momentum. The casimir is just the total angular momentum squared.

I want a similar interpretation for SU(2) weak and SU(3) colour in the standard model. For SU(2) weak there is one casimir and 3 generators - What observable quantities do they correspond to? SU(3) has 2 casimirs and 8 generators, again what observables do these correspond to?
 

Answers and Replies

Related Threads on Physical interpretation of charges and casimirs for SU(2) and SU(3)

  • Last Post
Replies
1
Views
943
  • Last Post
Replies
12
Views
10K
Replies
0
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
9
Views
3K
Replies
1
Views
788
Replies
1
Views
803
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
3
Views
3K
Top