Transformation of a nucleon-nucleon potential operator into its SU(3) tensor form using GPUS

0539485 - ÚJF 2022 RIV US eng J - Článek v odborném periodiku
Oberhuber, T. - Dytrych, Tomáš - Launey, K. D. - Langr, D. - Draayer, J. P.
Transformation of a nucleon-nucleon potential operator into its SU(3) tensor form using GPUS.
Discrete and Continuous Dynamical systems - Series S. Roč. 14, č. 3 (2021), s. 1111-1122. ISSN 1937-1632. E-ISSN 1937-1179
Institucionální podpora: RVO:61389005
Klíčová slova: GPU * irreducible tensors * nuclear interactions
Obor OECD: Pure mathematics
Impakt faktor: 1.865, rok: 2021
Způsob publikování: Open access
https://doi.org/10.3934/dcdss.2020383

Starting from the matrix elements of a nucleon-nucleon potential operator provided in a basis of spherical harmonic oscillator functions, we present an algorithm for expressing a given potential operator in terms of irreducible tensors of the SU(3) and SU(2) groups. Further, we introduce a GPU-based implementation of the latter and investigate its performance compared with a CPU-based version of the same. We find that the CUDA implementation delivers speedups of 2.27x - 5.93x.
Trvalý link: http://hdl.handle.net/11104/0317218