Integration of ab initio nuclear physics calculations with optimization techniques

TitleIntegration of ab initio nuclear physics calculations with optimization techniques
Publication TypeBook Chapter
Year of Publication2008
AuthorsSosonkina M, Sharda A, Negoita A, Vary JP
EditorBubak M, VanAlbada GD, Dongarra J, Sloot PMA
Book TitleComputational Science - Iccs 2008, Pt 1
CityBerlin
PublisherSpringer-Verlag Berlin
Volume5101
Pages833-842
Series TitleLecture Notes in Computer Science
ISBN Number0302-9743978-3-540-69383
Accession NumberISI:000257188800085
Keywordsderivative-free optimization, mfdn, No Core Shell Model, VTDIRECT95
Abstract

Optimization techniques are finding their inroads into the field of nuclear physics calculations where the objective functions are very complex and computationally intensive. A vast space of parameters needs searching to obtain a good match between theoretical (computed) and experimental observables, such as energy levels and spectra. In this paper, we propose a design integrating the ab initio nuclear physics code MFDn and the VTDIRECT95 code for derivative-free optimization. We experiment with the initial implementation of the design showing good matches for several single-nucleus cases. For the parallel MFDn code, we determine appropriate processor numbers to execute efficiently a multiple-nuclei parameter search.