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Yang-Mills Theory

  1. Jan 25, 2014 #1
    What exactly is a Yang-Mills Theory? Is it a general theory, based on SU(N) symmetry, which can then be applied for particular cases (ElectroWeak, Chromodynamics) ? Is it like a general mathematical model of gauge theory ?
  2. jcsd
  3. Jan 25, 2014 #2


    Staff: Mentor

    Yes its a gauge theory:

  4. Jan 29, 2014 #3
    Not necessarily SU(N). It can also be like SO(N), Sp(N), etc. The idea is we need to introduce gauge fields to keep the theory gauge invariant.
  5. Feb 1, 2014 #4


    User Avatar
    Science Advisor
    Homework Helper

    The gauge group of the field theory needs to be nonabelian, else it would just be quantum electrodynamics.
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