SHarmonic: A fast and accurate implementation of spherical harmonics for electronic-structure calculations

Fuente: arXiv
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Autores principales: Andrade, Xavier, Simoni, Jacopo, Ping, Yuan, Ogitsu, Tadashi, Correa, Alfredo A.
Formato: Preprint
Publicado: 2025
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author Andrade, Xavier
Simoni, Jacopo
Ping, Yuan
Ogitsu, Tadashi
Correa, Alfredo A.
author_facet Andrade, Xavier
Simoni, Jacopo
Ping, Yuan
Ogitsu, Tadashi
Correa, Alfredo A.
contents The authors present SHarmonic, a new implementation of the spherical harmonics targeted for electronic-structure calculations. Their approach is to use explicit formulas for the harmonics written in terms of normalized Cartesian coordinates. This approach results in a code that is as precise as other implementations while being at least one order of magnitude more computationally efficient. The library can run on graphics processing units (GPUs) as well, achieving an additional order of magnitude in execution speed. This new implementation is simple to use and is provided under an open source license, it can be readily used by other codes to avoid the error-prone and cumbersome implementation of the spherical harmonics.
format Preprint
id arxiv_https___arxiv_org_abs_2510_05282
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle SHarmonic: A fast and accurate implementation of spherical harmonics for electronic-structure calculations
Andrade, Xavier
Simoni, Jacopo
Ping, Yuan
Ogitsu, Tadashi
Correa, Alfredo A.
Computational Physics
Other Condensed Matter
Mathematical Software
Chemical Physics
The authors present SHarmonic, a new implementation of the spherical harmonics targeted for electronic-structure calculations. Their approach is to use explicit formulas for the harmonics written in terms of normalized Cartesian coordinates. This approach results in a code that is as precise as other implementations while being at least one order of magnitude more computationally efficient. The library can run on graphics processing units (GPUs) as well, achieving an additional order of magnitude in execution speed. This new implementation is simple to use and is provided under an open source license, it can be readily used by other codes to avoid the error-prone and cumbersome implementation of the spherical harmonics.
title SHarmonic: A fast and accurate implementation of spherical harmonics for electronic-structure calculations
topic Computational Physics
Other Condensed Matter
Mathematical Software
Chemical Physics
url https://arxiv.org/abs/2510.05282