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2 votes

Some integrals in QED Renormalisation

Your suspicion is justified. You are indeed missing a crucial approximation not mentioned in your post, turning a simple few-line calculation into an exercise in self-torture. The photon mass $m_\...
Hyperon's user avatar
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1 vote

Some integrals in QED Renormalisation

Your complaint is not entirely justified, the first integrand is just a rational function, for which solution methods can easily be found: integration-rational-functions Although tedious, it can be ...
Jos Bergervoet's user avatar
0 votes

Question about RG from QFT perspective, in particular Weinbergs book

Lets take for example QED. We know we need to include renormalization constants on the gauge field $A_\mu$, mass of the fermions $m$, the fermion field $\psi$, and the coupling constant $e\rightarrow ...
MathZilla's user avatar
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