Recent content by erikasan

Maybe, but at the same time it seems we're perfectly happy doing pertubation theory with terms that are literally infinite, but that's okay because the infinities cancel. Similarly, can't I just choose ##\log\left( \mu /E\right)## as large as I want knowing that all ##\mu## dependence cancels...

I have a question about the ##\mu## in dimensional regularization and how it is related to renormalization conditions. I follow the same notation and conventions as in Schwartz. Take QED as an example: $$\mathcal{L} =-\frac{1}{4}\left( F_{0}^{\mu \nu }\right)^{2} +\overline{\psi }_{0}\left(...