Ab Initio Study of 40Ca with an Importance Truncated No-Core Shell Model
| dc.creator | Roth, R. | |
| dc.creator | Navratil, P. | |
| dc.date | 2007-05-28 | |
| dc.date.accessioned | 2026-07-07T10:35:58Z | |
| dc.date.available | 2026-07-07T10:35:58Z | |
| dc.description | We propose an importance truncation scheme for the no-core shell model, which enables converged calculations for nuclei well beyond the p-shell. It is based on an a priori measure for the importance of individual basis states constructed by means of many-body perturbation theory. Only the physically relevant states of the no-core model space are considered, which leads to a dramatic reduction of the basis dimension. We analyze the validity and efficiency of this truncation scheme using different realistic nucleon-nucleon interactions and compare to conventional no-core shell model calculations for 4He and 16O. Then, we present the first converged calculations for the ground state of 40Ca within no-core model spaces including up to 16\hbarΩ-excitations using realistic low-momentum interactions. The scheme is universal and can be easily applied to other quantum many-body problems. | |
| dc.description | 4 pages, 5 figures, 1 table | |
| dc.identifier | https://arxiv.org/abs/0705.4069 | |
| dc.identifier | http://arxiv.org/abs/0705.4069 | |
| dc.identifier | Phys.Rev.Lett.99:092501,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.99.071302 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179899 | |
| dc.subject | Nuclear Theory | |
| dc.title | Ab Initio Study of 40Ca with an Importance Truncated No-Core Shell Model | |
| dc.type | text |