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Is scalar in adjoint representation always real

  1. Jan 9, 2014 #1
    This is a short question. I don't know why, but somehow I have the impression that scalar in adjoint representation should be real. Now I highly doubt this statement, but I have no idea how to disprove it. Can anyone give me a clear no?
    Thanks,
     
  2. jcsd
  3. Jan 10, 2014 #2

    samalkhaiat

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    "scalar in the adjoint representation"? If you are asking about scalar fields transforming in the adjoint representation, then the answer is no. The three pi mesons (which are complex fields) transform in the adjoint rep. of SU(2).
     
    Last edited: Jan 10, 2014
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