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What is meant by the term gauge singlet ?

  1. Dec 2, 2009 #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.)
     
  2. jcsd
  3. Dec 2, 2009 #2
    Re: What is meant by the term "gauge singlet"?

    Singlet means that something is inaffacted by a certain symmetry transformation.

    Examples:

    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)
     
  4. Dec 4, 2009 #3

    blechman

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    Science Advisor

    Re: What is meant by the term "gauge singlet"?

    In other worlds, "neutral"; zero charge.
     
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