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

Finn Lasse Buessen

SciPost Phys. Codebases 5 (2022) · published 24 August 2022

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We present the SpinParser open-source software [ ]. 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.

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