| Autor: |
Frosini, Mikael, Duguet, Thomas, Ebran, Jean-Paul, Bally, Benjamin, Mongelli, Tobias, Rodríguez, Tomás R., Roth, Robert, Somà, Vittorio |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Eur. Phys. J. A 58, 63 (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1140/epja/s10050-022-00693-y |
| Popis: |
The neon isotopic chain displays a rich phenomenology, ranging from clustering in the ground-state of the self-conjugate doubly open-shell stable $^{20}$Ne isotope to the physics of the island of inversion around the neutron-rich $^{30}$Ne isotope. This second (i.e. Paper II) of the present series proposes an extensive ab initio study of neon isotopes based on two complementary many-body methods, i.e. the quasi-exact in-medium no-core shell model (IM-NCSM) and the projected generator coordinate method (PGCM) that is ideally suited to capturing strong static correlations associated with shape deformation and fluctuations. Calculations employ a state-of-the-art generation of chiral effective field theory Hamiltonians and evaluate the associated systematic uncertainties. In spite of missing so-called dynamical correlations, which can be added via the multi-reference perturbation theory proposed in the first paper (i.e. Paper I) of the present series, the PGCM is shown to be a suitable method to tackle the low-lying spectroscopy of complex nuclei. Still, describing the physics of the island of inversion constitutes a challenge that seems to require the inclusion of dynamical correlations. This is addressed in the third paper (i.e. Paper III) of the present series. |
| Databáze: |
arXiv |
| Externí odkaz: |
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