Finite fixed points - rule rather than exception

A. Kovner*, Baruch Rosenstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We calculate anomalous dimensions of composite operators in 2+1 dimensional scalar, Yukawa and QED theories. In the strong coupling regime the anomalous dimensions are large and some composite operators entering the lagrangian become irrelevant. Theories flow to nonperturbative fixed points. The renormalizable theories describing this limit are correspondingly the nonlinear σ-model, the four-Fermi interaction and the "chargeless" QED.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalPhysics Letters B
Issue number1-2
StatePublished - 23 May 1991

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