The SpinParser software for pseudofermion functional renormalization group calculations on quantum magnets

TL;DR

SpinParser is an open-source software tool that simplifies and accelerates pseudofermion functional renormalization group calculations for complex quantum magnets in multiple dimensions, making advanced simulations more accessible.

Contribution

It introduces a user-friendly, flexible software platform that automates symmetry analysis and supports large-scale computations for pf-FRG studies.

Findings

Enables efficient large-scale pf-FRG calculations

Automates symmetry analysis for quantum magnet models

Supports customizable lattice and spin models

Abstract

We present the SpinParser open-source software [ https://github.com/fbuessen/SpinParser ]. The software is designed to perform pseudofermion functional renormalization group (pf-FRG) calculations for frustrated quantum magnets in two and three spatial dimensions. It aims to make such calculations readily accessible without the need to write specialized program code; instead, custom lattice graphs and microscopic spin models can be defined as plain-text input files. Underlying symmetries of the model are automatically analyzed and exploited by the numerical core written in C++ in order to optimize the performance across large-scale shared memory and/or distributed memory computing platforms.