Report on 2005.00827v1

Abstract

We present a highly parallelisable scheme for treating functional Renormalisation Group equations which incorporates a quasi-particle-based feedback on the flow and provides direct access to real-frequency self-energy data.This allows to map out the boundaries of Fermi-liquid regimes and to study the effect of quasi-particle degradation near Fermi liquid instabilities.As a first application, selected results for the two-dimensional half-filled perfectly nested Hubbard model are shown.

Authors 2

1. D. Rohe corresponding

   Forschungszentrum Jülich · Jülich Supercomputing Centre

   Affiliation as printed

   Forschungszentrum Juelich GmbH , Juelich Supercomputing Centre (JSC) , SimLab Quantum Materials , Juelich , Germany

2. C. Honerkamp Aachen Institute for Theoretical Solid State Physics

   RWTH Aachen University

   Affiliation as printed

   Institute for Theoretical Solid State Physics , RWTH Aachen University , and JARA-FIT and CSD , 52056 Aachen , Germany