Ab initio translationally invariant nucleon-nucleus optical potentials
| Autor: | Burrows, M., Launey, K. D., Mercenne, A., Baker, R. B., Sargsyan, G. H., Dytrych, T., Langr, D. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.109.014616 |
| Popis: | We combine the \textit{ab initio} symmetry-adapted no-core shell model (SA-NCSM) with the single-particle Green's function approach to construct optical potentials rooted in first principles. Specifically, we show that total cross sections and phase shifts for neutron elastic scattering from a $^4$He target with projectile energies between 0.5 and 10 MeV closely reproduce the experiment. In addition, we discuss an important new development that resolves a long-standing issue with spurious center-of-mass motion in the Green's function formalism for many-body approaches. The new development opens the path for first-principle predictions of cross sections for elastic scattering of single-nucleon projectiles, nucleon capture and deuteron breakup reactions, feasible for a broad range of open-shell spherical and deformed nuclei in the SA-NCSM approach. Comment: 19 pages, 11 figures, to be submitted to Physical Review C |
| Databáze: | arXiv |
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