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YangMills Theory 
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#1
Jan2514, 12:30 PM

P: 76

What exactly is a YangMills 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
Jan2514, 12:36 PM

P: 2,817



#3
Jan2914, 05:03 PM

P: 86

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.



#4
Feb114, 03:40 AM

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P: 11,896

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



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