| Autor: |
Y.L. Yang, P.W. Zhao |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Physics Letters B, Vol 835, Iss , Pp 137587- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/j.physletb.2022.137587 |
| Popis: |
A microscopic relativistic Hamiltonian containing consistent relativistic and 3N potentials is, for the first time, constructed based on the leading-order covariant pionless effective field theory, and this Hamiltonian is solved by developing a new accurate relativistic ab initio method with a novel symmetry-based artificial neural network for A≤4 nuclei. It is found that the relativistic effects overcome the energy collapse problem for 3H and 4He without promoting a repulsive three-nucleon interaction to leading order as in nonrelativistic calculations. To exactly reproduce the experimental ground-state energies, a three-nucleon interaction is needed and its interplay with the relativistic effects plays a crucial role. The presented results open the new avenue for a unified and consistent study on relativistic effects and many-body interactions in atomic nuclei, and would also help to achieve more accurate ab initio calculations for nuclei. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect