First, the full notion of renormalization group, as studied in QFT, is definitely not needed in the classical theory. This is because QFT actually doesn't make sense without a renormalization scheme and for …

Dec 19, 2017 · Once, Dirac said the following about renormalization in Quantum Field Theory (look here, for example): Renormalization is just a stop-gap procedure. There must be some fundamental …

May 9, 2015 · If you have an interest in physics you have likely come across renormalisation before, although what it really is would probably have not been explained.

Feb 9, 2022 · Renormalization Simply put, renormalization is a consequence of non-linearities. Any theory (other than those that are linear) requires renormalization. Even in classical Newtonian …

Feb 20, 2025 · In QED, we usually say that charge renormalization is a consequence of vacuum polarization, because of the virtual electron-position pairs, the bare charge is shielded. It is intuitively …

Jun 28, 2020 · A common idea in the context of condensed matter is to interpret the renormalization of mass as an effect of interactions. In particular, people often call the mass-shift as "self interaction …

Mar 7, 2016 · I'm trying to learn the renormalization group, but I am confused about renormalization schemes. The general idea of RG is that physical predictions are independent of "the scale at which …

May 28, 2017 · The renormalization conditions in $\phi^4-$theory are given in Eqn. 10.19 of Peskin and Schroeder, are supposed to define the physical mass and the physical couplings.

39 In quantum field theory we have the concepts of regularization and renormalization. I'm a little confused about these two. In my understanding regularization is a way to make divergent integrals …

May 21, 2020 · There is definitely a difference between renormalization and the renormalization group. Renormalization is a broader concept of getting finite answers out of theories that involve diverging …