Ground-state correlations within a nonperturbative approach

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00474585" target="_blank" >RIV/61389005:_____/17:00474585 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10368630

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.95.024306" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.95.024306</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.95.024306" target="_blank" >10.1103/PhysRevC.95.024306</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ground-state correlations within a nonperturbative approach

Popis výsledku v původním jazyce

The contribution of the two-phonon configurations to the ground state of He-4 and O-16 is evaluated nonperturbatively using a Hartree-Fock basis within an equation-of-motion phonon method using a nucleon-nucleon optimized chiral potential. Convergence properties of energies and root-mean-square radii versus the harmonic oscillator frequency and space dimensions are investigated. The comparison with the second-order perturbation theory calculations shows that the higher-order terms have an appreciable repulsive effect and yield too-small binding energies and nuclear radii. It is argued that four-phonon configurations, through their strong coupling to two phonons, may provide most of the attractive contribution necessary for filling the gap between theoretical and experimental quantities. Possible strategies for accomplishing such a challenging task are discussed.

Název v anglickém jazyce

Ground-state correlations within a nonperturbative approach

Popis výsledku anglicky

The contribution of the two-phonon configurations to the ground state of He-4 and O-16 is evaluated nonperturbatively using a Hartree-Fock basis within an equation-of-motion phonon method using a nucleon-nucleon optimized chiral potential. Convergence properties of energies and root-mean-square radii versus the harmonic oscillator frequency and space dimensions are investigated. The comparison with the second-order perturbation theory calculations shows that the higher-order terms have an appreciable repulsive effect and yield too-small binding energies and nuclear radii. It is argued that four-phonon configurations, through their strong coupling to two phonons, may provide most of the attractive contribution necessary for filling the gap between theoretical and experimental quantities. Possible strategies for accomplishing such a challenging task are discussed.

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/GA13-07117S" target="_blank" >GA13-07117S: Statistické přístupy ke kvantovým mnohočásticovým systémům</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

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000393501800003

EID výsledku v databázi Scopus

2-s2.0-85015436496