2020/10/07 by N. K. Timofeyuk · 5 citations
Mathematics · Physics and Astronomy · #Advanced Chemical Physics Studies #Asymmetry #Atomic and Molecular Physics #Computer science #Configuration space #Isospin #Mathematics #Nuclear force #Nuclear physics research studies #Nucleon #Particle physics #Physics #Quantum mechanics #Space (punctuation) #Statistics #Term (time) #Truncation (statistics) #nucl-ex #nucl-th
paper · pdf · doi:10.1088/1361-6471/abbf00
published in Journal of Physics G Nuclear and Particle Physics 48(1), 015105 (IOP Publishing) · Accepted for publication in Journal of Physics G
openalex publication_date 2020/10/07 · arxiv created 2020/10/09 · arxiv updated 2020/12/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Abstract One-nucleon overlap functions, needed for nucleon-removal reaction calculations, are solutions of an inhomogeneous equation with the source term defined by the wave functions of the initial and final nuclear states and interaction between the removed nucleon with the rest. The source term approach (STA) allows the overlaps with correct asymptotic decrease to be modelled while using nuclear many-body functions calculated in minimal model spaces. By properly choosing the removed nucleon interaction the minimum-model-space STA can reproduce reduced values of spectroscopic factors (SFs) extracted from nucleon-removal reactions and predicts isospin asymmetry in the SF reduction. It is well-known that model space truncation leads to the appearance of higher-order induced forces, with three-nucleon force being the most important. In this paper the role of such a force on the source term calculation is studied. Applications to one-nucleon removal from double-magic nuclei show that three-nucleon force improves the description of available phenomenological overlap functions and reduces isospin asymmetry in SFs.