|Dec2-09, 10:02 AM||#1|
What is meant by the term "gauge singlet"?
Can anybody please explain what is meant by the term "gauge singlet"?
To be more specific, I got the term in a discussion on wess-zumino lagrangian where the superpotential contains the term:[tex]a_i \phi_i [/tex]. The author claims that in order the theory to be gauge invariant and invariant under susy, the fields present in this term must be gauge singlets. I do not understand this at all. (The fields mentioned are left handed chiral superfields.)
|Dec2-09, 11:25 AM||#2|
Singlet means that something is inaffacted by a certain symmetry transformation.
The neutrino is a U(1) - electric charge singlet.
The electron is a SU(3) - color singlet
The Higgs boson is a Lorentz: SO(3,1) - singlet (scalar particle)
|Dec4-09, 02:20 PM||#3|
In other worlds, "neutral"; zero charge.
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