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Results tagged with renormalization
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user 171439
This tag is for questions which relates with the renormalization, an ensemble of techniques which serves to treat the infinities which appear in quantum field theory or statistical mechanics. Renormalization procedures are based on the requirement that certain physical quantities (such as the mass and charge of an electron) equal observed (experimental) values.
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Peskin & Schroeder Chap. 7.1 ultraviolet divergence
In Chap. 7.1 of Peskin & Schroeder, the electron mass difference between the physical mass, $m$, and the Lagrangian bare mass, $m_0$ was calculated to be $$m-m_0 = \delta m \rightarrow \frac{3\alpha}{ …
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