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I read this on a wikipedia site

"Technically, QCD is a gauge theory with SU(3) gauge symmetry. Quarks are introduced as spinor fields in Nf flavors, each in the fundamental representation (triplet, denoted 3) of the color gauge group, SU(3). The gluons are vector fields in the adjoint representation (octets, denoted 8) of color SU(3)."

and I wanted to know if spin 1 boson fields are always the adjoint of the spin 1/2 fermionic field they couple to, and if so, what does this accomplish mathematically?

Thanks, Mark

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# Are boson fields the adjoint of the fermionic field they couple to?

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