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Title: Realistic shell-model calculations for p -shell nuclei including contributions of a chiral three-body force

Journal Article · · Physical Review. C
 [1];  [1];  [2];  [1];  [1];  [3];  [2]
  1. Complesso Univ. di Monte S. Angelo, Napoli (Italy)
  2. Peking Univ., Beijing (China)
  3. Complesso Univ. di Monte S. Angelo, Napoli (Italy); Univ. degli Studi della Campania “Luigi Vanvitelli,”, Caserta (Italy)

In this study we present an evolution of our derivation of the shell-model effective Hamiltonian, namely introducing effects of three-body contributions. More precisely, we consider a three-body potential at next-to-next-to-leading order in chiral perturbation theory, and the induced three-body forces that arise from many-body correlations among valence nucleons. The first one is included, in the derivation of the effective Hamiltonian for one- and two-valence nucleon-systems, at first order in the many-body perturbation theory. Namely, we include only the three-body interaction between one or two valence nucleons and those belonging to the core. For nuclei with more than two valence particles, both induced—turned on by the two-body potential—and genuine three-body forces come into play. Since it is difficult to perform shell-model calculations with three-body forces, these contributions are estimated for the ground-state energy only. To establish the reliability of our approximations, we focus attention on nuclei belonging to the p shell, aiming to benchmark our calculations against those performed with the ab initio no-core shell model. The obtained results are satisfactory, and pave the way to the application of our approach to nuclear systems with heavier masses.

Research Organization:
Texas A & M Univ., Commerce, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Natural Science Foundation of China
Grant/Contract Number:
SC0009971; 11320101004; 11575007
OSTI ID:
1611277
Alternate ID(s):
OSTI ID: 1477569
Journal Information:
Physical Review. C, Vol. 98, Issue 4; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (6)

Effective interactions in the s d shell journal November 2019
Effective interactions in the sd shell text January 2019
Towards modeling cluster structure of 8Be with chiral interaction journal March 2022
Perturbative Approach to Effective Shell-Model Hamiltonians and Operators journal October 2020
Present Status of Nuclear Shell-Model Calculations of 0νββ Decay Matrix Elements journal December 2020
Ab-initio no-core shell model study of $^{10-14}$B isotopes with realistic NN interactions text January 2020

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