Efficacy of the SU(3) scheme for ab initio large-scale calculations beyond the lightest nuclei

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F16%3AN0000104" target="_blank" >RIV/00010669:_____/16:N0000104 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/16:00464150 RIV/68407700:21240/16:00300149
Result on the web
<a href="http://dx.doi.org/10.1016/j.cpc.2016.06.006" target="_blank" >http://dx.doi.org/10.1016/j.cpc.2016.06.006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cpc.2016.06.006" target="_blank" >10.1016/j.cpc.2016.06.006</a>

Result language
angličtina
Original language name
Efficacy of the SU(3) scheme for ab initio large-scale calculations beyond the lightest nuclei
Original language description
We report on the computational characteristics of ab initio nuclear structure calculations in a symmetry-adapted no-core shell model (SA-NCSM) framework. We examine the computational complexity of the current implementation of the SA-NCSM approach, dubbed LSU3shell, by analyzing ab initio results for 6Li and 12C in large harmonic oscillator model spaces and SU3-selected subspaces. We demonstrate LSU3shell’s strong-scaling properties achieved with highly-parallel methods for computing the many-body matrix elements. Results compare favorably with complete model space calculations and significant memory savings are achieved in physically important applications. In particular, a well-chosen symmetry-adapted basis affords memory savings in calculations of states with a fixed total angular momentum in large model spaces while exactly preserving translational invariance.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Project
<a href="/en/project/GA16-16772S" target="_blank" >GA16-16772S: Development of symmetry-guided methods for first principle modeling of medium-mass atomic nuclei</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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