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- Title
Universality in the Exact Renormalization Group: Comparison to Perturbation Theory.
- Authors
Gaite, José
- Abstract
Various formulations of the exact renormalization group can be compared in the perturbative domain, in which we have reliable expressions for regularization-independent (universal) quantities. We consider the renormalization of the λ ϕ 4 theory in three dimensions and make a comparison between the sharp-cutoff regularization method and other more recent methods. They all give good results, which only differ by small non-universal terms.
- Subjects
RENORMALIZATION group; PERTURBATION theory; RENORMALIZATION (Physics)
- Publication
Universe (2218-1997), 2023, Vol 9, Issue 9, p409
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe9090409