Superconductivity of repulsive spinless fermions with sublattice potentials

He, Yuchi; Yang, Kang; Hauck, Jonas B.; Bergholtz, Emil J.; Kennes, Dante M.

doi:10.1103/physrevresearch.5.l012009

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“…For applications of this framework on physical systems, see Refs. [19,20,23,26,35,48,51,60]. We believe that the flavors of FRG realized in divERGe represent a sophisticated drop-in replacement for RPA in many applications in which qualitative predictions of correlated phases are wanted.…”

Section: Discussionmentioning

confidence: 98%

divERGe implements various Exact Renormalization Group examples

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Kennes,

Klebl

2024

SciPost Phys. Codebases

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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^22FRG, 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.

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