Ab initio translationally invariant nucleon-nucleus optical potentials

0585014 - ÚJF 2025 RIV US eng J - Článek v odborném periodiku
Burrows, M. - Launey, K. D. - Mercenne, A. - Baker, R. B. - Sargsyan, G. H. - Dytrych, Tomáš - Langr, D.
Ab initio translationally invariant nucleon-nucleus optical potentials.
Physical Review C. Roč. 109, č. 1 (2024), č. článku 014616. ISSN 2469-9985. E-ISSN 2469-9993
Grant CEP: GA ČR(CZ) GA22-14497S
Institucionální podpora: RVO:61389005
Klíčová slova: ab initio symmetry-adapted no-core shell model * Green's function * optical potentials
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 3.1, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevC.109.014616

We combine the 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 4He 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 manybody approaches. The new development opens a 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.
Trvalý link: https://hdl.handle.net/11104/0352784