Электронный каталог

Статья

Dima, M.
Use Case Application of SU2 Software Package : [Abstract] / M.Dima, M.-T.Dima, M.Mihailescu // Физика элементарных частиц и атомного ядра. Письма. – 2023. – Т.20, №5. – P.1353. – URL: http://www1.jinr.ru/Pepan_letters/panl_2023_5/72_Dima_ann.pdf.

We present a use case of our SU2 software package of SU (2) scalars. The package offers simple F77-style coding in C++ for the user, but comes with all the advantages of modern C++ (move- semantics and polymorphic implementation), which are essential to all scientific libraries. The use case here presented is of a driven damped harmonic oscillator, known to require two integrals, of which one constitutes the Green function for the problem. However, with SU (2) scalars the differential equation is first-order, trivially integrated, and the Green function is a matrix element of the Propagator, as we shall show. Perhaps this mathematical flare is dismissible as equivalent to other known methods; however, from the computational point of view it is a marked advantage, both in simplicity of design and especially in numerical precision, as only one integral is needed.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = Ц 840 б - Математическое обеспечение ЭВМ. Операционные системы