Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00475654" target="_blank" >RIV/61389005:_____/17:00475654 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.95.044312" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.95.044312</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.95.044312" target="_blank" >10.1103/PhysRevC.95.044312</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective

Popis výsledku v původním jazyce

We present a detailed discussion of the structure of the low-lying positive-parity energy spectrum of C-12 from a no-core shell-model perspective. The approach utilizes a fraction of the usual shell-model space and extends its multishell reach via the symmetry-based no-core symplectic shell model (NCSpM) with a simple, physically informed effective interaction. We focus on the ground-state rotational band, the Hoyle state, and its 2(+) and 4(+) excitations, as well as the giant monopole 0(+) resonance, which is a vibrational breathing mode of the ground state. This, in turn, allows us to address the open question about the structure of the Hoyle state and its rotational band. In particular, we find that the Hoyle state is best described through deformed prolate collective modes rather than vibrational modes, while we show that the higher lying giant monopole 0(+) resonance resembles the oblate deformation of the C-12 ground state. In addition, we identify the giant monopole 0(+) and quadrupole 2(+) resonances of selected light-and intermediate-mass nuclei, along with other observables of C-12, including matter rms radii, electric quadrupole moments, and E2 and E0 transition rates.

Název v anglickém jazyce

Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective

Popis výsledku anglicky

We present a detailed discussion of the structure of the low-lying positive-parity energy spectrum of C-12 from a no-core shell-model perspective. The approach utilizes a fraction of the usual shell-model space and extends its multishell reach via the symmetry-based no-core symplectic shell model (NCSpM) with a simple, physically informed effective interaction. We focus on the ground-state rotational band, the Hoyle state, and its 2(+) and 4(+) excitations, as well as the giant monopole 0(+) resonance, which is a vibrational breathing mode of the ground state. This, in turn, allows us to address the open question about the structure of the Hoyle state and its rotational band. In particular, we find that the Hoyle state is best described through deformed prolate collective modes rather than vibrational modes, while we show that the higher lying giant monopole 0(+) resonance resembles the oblate deformation of the C-12 ground state. In addition, we identify the giant monopole 0(+) and quadrupole 2(+) resonances of selected light-and intermediate-mass nuclei, along with other observables of C-12, including matter rms radii, electric quadrupole moments, and E2 and E0 transition rates.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/GA16-16772S" target="_blank" >GA16-16772S: Vývoj symetriemi-řízených metod pro modelování středně těžkých atomových jader z prvních principů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review C

ISSN

2469-9985

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000399938800003

EID výsledku v databázi Scopus

2-s2.0-85017288769