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Title: Applications of the modified Hulthén-Kohn method for bound and scattering states

Journal Article · · Physical Review. C
DOI: https://doi.org/10.1103/bhgh-d9s7 · OSTI ID:2910634

We adapt the Hulthén–Kohn method suggested by Efros [Phys. Rev. C 99, 034620 (2019)] for calculating various observables in the continuum and discrete spectrum using two-body interactions in single- and coupled channel systems. We explore the convergence of phase shifts and wave functions as well as the location of S-matrix poles which enables obtaining both resonance and bound state parameters. We find that employing a harmonic oscillator basis, together with an interaction smoothing scheme introduced by Gyarmati et al. [Nucl. Phys. A 326, 119 (1979)], and adopting approximate bound-state solutions for the short-range components of basis wave functions lead to good convergence even with restricted oscillator quanta accessible for modern no-core shell model codes. The adapted Efros method will facilitate ab initio many-body nuclear structure applications.

Research Organization:
Iowa State University, Ames, IA (United States)
Sponsoring Organization:
Gansu Province; USDOE
Grant/Contract Number:
SC0023692; SC0023707
OSTI ID:
2910634
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 112; ISSN 2469-9985; ISSN 2469-9993
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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