givne a theory with a given lagrangian..how do you obtain the dimension of coupling constatn?..in fact how do you know that for electromagnetism is g=1/137 or that for gravitation have units of m**-2?(adsbygoogle = window.adsbygoogle || []).push({});

Can the coupling constant be rescaled to get always a dimensionless one?

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# Coupling constatn dimensions

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