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Multiloop Functional Renormalization Group That Sums Up All Parquet Diagrams

Fabian B Kugler1, Jan von Delft1

  • 1Physics Department, Arnold Sommerfeld Center for Theoretical Physics, and Center for NanoScience, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 Munich, Germany.

Physical Review Letters
|February 27, 2018
PubMed
Summary

This study introduces a multiloop flow equation within the functional renormalization group (FRG) framework. This advancement improves FRG calculations for the four-point vertex and self-energy, offering more accurate results.

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