SU3lib: A C++ library for accurate computation of Wigner and Racah coefficients of SU(3)

0545629 - ÚJF 2022 RIV NL eng J - Journal Article
Dytrych, Tomáš - Langr, D. - Draayer, J. P. - Launey, K. D. - Gazda, Daniel
SU3lib: A C++ library for accurate computation of Wigner and Racah coefficients of SU(3).
Computer Physics Communications. Roč. 269, DEC (2021), č. článku 108137. ISSN 0010-4655. E-ISSN 1879-2944
R&D Projects: GA ČR GA19-19640S
Institutional support: RVO:61389005
Keywords : SU(3) * SU(2) * SO(3) * Wigner coefficients * Racah coefficients * Clebsch-Gordan coeffcients * Isoscalar factors * C plus
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 4.717, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.cpc.2021.108137

We present the C++ library SU3lib for accurate computation of SU(3) Wigner coupling and Racah recoupling coefficients. It is built on the efficient mathematical algorithm originally proposed by Draayer and Akiyama. The presented library extends the reach of this algorithm towards large SU(3) irreducible representations and outer multiplicities that were heretofore inaccessible due to floating-point precision errors. As large irreducible representations of SU(3) play an important role in medium-and heavy-mass atomic nuclei, SU3lib expands the scope of approaches to nuclear structure and reactions that rely on available SU(3) coupling-recoupling coefficients.
Permanent Link: http://hdl.handle.net/11104/0322304