Codebase release 0.5 for divERGe

SciPost Physics Codebases

Abstract

We present divERGe, an open source, high-performance C/C++/Python library for functional renormalization group (FRG) calculations on lattice fermions. The versatile model interface is tailored to real materials applications and seamlessly integrates with existing, standard tools from the ab-initio community. The code fully supports multi-site, multi-orbital, and non-SU(2) models in all of the three included FRG variants: TU ^2 2 FRG, N-patch FRG, and grid FRG. With this, the divERGe library paves the way for widespread application of FRG as a tool in the study of competing orders in quantum materials.

Authors 3

1. Jonas B. Profe Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University

2. Dante Marvin Kennes Aachen

   RWTH Aachen University · Max Planck Institute for the Structure and Dynamics of Matter

   Affiliation as printed

   Max Planck Institute for the Structure and Dynamics of Matter

   RWTH Aachen University

3. Lennart Klebl

   Universität Hamburg

   Affiliation as printed

   University of Hamburg