I am trying to understand the basics of Renormalization. I have read that β encodes the running coupling and can be expanded as a power series as:(adsbygoogle = window.adsbygoogle || []).push({});

β(g) = ∂g/(∂ln(μ)) = β_{0}g^{3}+ β_{1}g^{5}+ ...

However, I don't understand how this is derived.. I assume that the terms correspond to 1 loop, 2 loops etc. Can somebody help me out.

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# A Perturbative expansion of Beta function - Renormalization

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