Removal of the center of mass in nuclei and its effects on He-4

0549524 - ÚJF 2022 RIV NL eng J - Journal Article
De Gregorio, G. - Knapp, F. - Lo Iudice, N. - Veselý, Petr
Removal of the center of mass in nuclei and its effects on He-4.
Physics Letters. B. Roč. 821, OCT (2021), č. článku 136636. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA ČR GA19-14048S
Research Infrastructure: CESNET II - 90042; CERIT-SC - 90085
Institutional support: RVO:61389005
Keywords : He-4 * center of mass * Equation of motion phonon method * Singular value decompositon
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 4.950, year: 2021
Method of publishing: Open access
https://doi.org/10.1016/j.physletb.2021.136636

The singular value decomposition of rectangular matrices is shown to provide the recipe for removing the center of mass spurious admixtures from the multiphonon basis generated by an equation of motion method for solving the nuclear eigenvalue problem. It works for any single particle basis without any energy restriction on the selection of the configurations. Its effects on He-4 are illustrated.
Permanent Link: http://hdl.handle.net/11104/0325519