Symmetry-guided large-scale shell-model theory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00460795" target="_blank" >RIV/61389005:_____/16:00460795 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.ppnp.2016.02.001" target="_blank" >http://dx.doi.org/10.1016/j.ppnp.2016.02.001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ppnp.2016.02.001" target="_blank" >10.1016/j.ppnp.2016.02.001</a>

Result language

angličtina

Original language name

Symmetry-guided large-scale shell-model theory

Original language description

In this review, we present a symmetry-guided strategy that utilizes exact as well as partial symmetries for enabling a deeper understanding of and advancing ab initio studies for determining the microscopic structure of atomic nuclei. These symmetries expose physically relevant degrees of freedom that, for large-scale calculations with QCD-inspired interactions, allow the model space size to be reduced through a very structured selection of the basis states to physically relevant subspaces. This is illustrated for the ab initio symmetry-adapted no-core shell model (SA-NCSM) and two significant underlying symmetries, the symplectic Sp(3, IR) group and its deformation-related SU(3) subgroup. We review the broad scope of nuclei, where these symmetries have been found to play a key role from the light p-shell systems, such as Li-6, B-8, Be-8, C-12, and O-16, and sd-shell nuclei exemplified by Ne-20, based on first-principle explorations; through the Hoyle state in C-12 and enhanced collectivity in intermediate-mass nuclei, within a no-core shell-model perspective; up to strongly deformed species of the rare-earth and actinide regions, as investigated in earlier studies. A complementary picture, driven by symmetries dual to Sp(3, R), is also discussed. We briefly review symmetry-guided techniques that prove useful in various nuclear-theory models, such as Elliott model, ab initio SA-NCSM, symplectic model, pseudo-SU(3) and pseudo-symplectic models, ab initio hyperspherical harmonics method, ab initio lattice effective field theory, exact pairing-plus-shell model approaches, and cluster models, including the resonating-group method. Important implications of these approaches that have deepened our understanding of emergent phenomena in nuclei, such as enhanced collectivity, giant resonances, pairing, halo, and clustering, are discussed, with a focus on emergent patterns in the framework of the ab initio SA-NCSM with no a priori assumptions.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BE - Theoretical physics

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

Name of the periodical

Progress in Particle and Nuclear Physics

ISSN

0146-6410

e-ISSN

—

Volume of the periodical

89

Issue of the periodical within the volume

JUL

Country of publishing house

GB - UNITED KINGDOM

Number of pages

36

Pages from-to

101-136

UT code for WoS article

000377831600003

EID of the result in the Scopus database

2-s2.0-84959517136