If anyone has genuine interest, this review from shortly after the clarifying development of renormalization group theory might be a nice place to start: https:

If anyone has genuine interest, this review from shortly after the clarifying development of renormalization group theory might be a nice place to start: https://journals.aps.org/rmp/abstract/10.1103/RevModPhys.46.597 https://journals.aps.org/rmp/abstract/10.1103/RevModPhys.46....