dc.creatorJaganathen, Y.
dc.creatorId Betan, Rodolfo Mohamed
dc.creatorMichel, N.
dc.creatorNazarewicz, W.
dc.creatorPloszajczak, M.
dc.date.accessioned2018-11-09T20:03:41Z
dc.date.accessioned2022-10-15T00:06:36Z
dc.date.available2018-11-09T20:03:41Z
dc.date.available2022-10-15T00:06:36Z
dc.date.created2018-11-09T20:03:41Z
dc.date.issued2017-11
dc.identifierJaganathen, Y.; Id Betan, Rodolfo Mohamed; Michel, N.; Nazarewicz, W.; Ploszajczak, M.; Quantified Gamow shell model interaction for psd -shell nuclei; American Physical Society; Physical Review C; 96; 5; 11-2017; 1-11
dc.identifier2469-9993
dc.identifierhttp://hdl.handle.net/11336/64145
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4322856
dc.description.abstractBackground: The structure of weakly bound and unbound nuclei close to particle drip lines is one of the major science drivers of nuclear physics. A comprehensive understanding of these systems goes beyond the traditional configuration interaction approach formulated in the Hilbert space of localized states (nuclear shell model) and requires an open quantum system description. The complex-energy Gamow shell model (GSM) provides such a framework as it is capable of describing resonant and nonresonant many-body states on equal footing. Purpose: To make reliable predictions, quality input is needed that allows for the full uncertainty quantification of theoretical results. In this study, we carry out the optimization of an effective GSM (one-body and two-body) interaction in the psdf-shell-model space. The resulting interaction is expected to describe nuclei with 512 at the p-sd-shell interface. Method: The one-body potential of the He4 core is modeled by a Woods-Saxon + spin-orbit + Coulomb potential, and the finite-range nucleon-nucleon interaction between the valence nucleons consists of central, spin-orbit, tensor, and Coulomb terms. The GSM is used to compute key fit observables. The χ2 optimization is performed using the Gauss-Newton algorithm augmented by the singular value decomposition technique. The resulting covariance matrix enables quantification of statistical errors within the linear regression approach. Results: The optimized one-body potential reproduces nucleon-He4 scattering phase shifts up to an excitation energy of 20 MeV. The two-body interaction built on top of the optimized one-body field is adjusted to the bound and unbound ground-state binding energies and selected excited states of the helium, lithium, and beryllium isotopes up to A=9. A very good agreement with experimental results was obtained for binding energies. First applications of the optimized interaction include predictions for two-nucleon correlation densities and excitation spectra of light nuclei with quantified uncertainties. Conclusion: The new interaction will enable comprehensive and fully quantified studies of structure and reactions aspects of nuclei from the psd region of the nuclear chart.
dc.languageeng
dc.publisherAmerican Physical Society
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevC.96.054316
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prc/abstract/10.1103/PhysRevC.96.054316
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectGamow
dc.subjectEffective interaction
dc.subjectBerggren
dc.subjectContinuum
dc.titleQuantified Gamow shell model interaction for psd -shell nuclei
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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