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. Daniel Rohe corresponding

   Forschungszentrum Jülich · Jülich Supercomputing Centre

   Affiliation as printed

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

2. Carsten 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