Nonrenormalization Theorem for Gauge Coupling in 2 + 1 D
نویسنده
چکیده
We prove that β-function of the gauge coupling in 2 + 1D gauge theory coupled to any renormalizable system of spinor and scalar fields is zero. This result holds both when the gauge field action is the Chern-Simons action and when it is the topologically massive action.
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