Categories: Quantum field theory
In theoretical physics, a gauge coupling is the parameter g than determines the strength of the interaction in a gauge theory.
It's the coefficient of the Yang-Mills term in the Lagrangian
![-{1 \over 4g^2}Tr[F^{\mu\nu}F_{\mu\nu}]](a/../upload/math/d11241c305b6867fcaef213cdfda5755.png)
