Just a simple question -- can the dimension of coupling constant be a rational number or should it always be an integer?(adsbygoogle = window.adsbygoogle || []).push({});

The question arose when I was trying to construct a Lagrangian with an interaction term involving two spin-1 particles and a fermion. The dimensions add up to 7/2, which leaves 1/2 for the coupling.

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# Mass dimension of coupling constant -- always an integer?

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