Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized seniority with realistic interactions in open-shell nuclei   Generalized seniority provides a truncation scheme for the nuclear shell
model, based on pairing correlations, which offers the possibility of
dramatically reducing the dimensionality of the nuclear shell-model problem.
Systematic comparisons against results obtained in the full shell-model space
are required to assess the viability of this scheme. Here, we extend recent
generalized seniority calculations for semimagic nuclei, the Ca isotopes, to
open-shell nuclei, with both valence protons and valence neutrons. The
even-mass Ti and Cr isotopes are treated in a full major shell and with
realistic interactions, in the generalized seniority scheme with one broken
proton pair and one broken neutron pair. Results for level energies, orbital
occupations, and electromagnetic observables are compared with those obtained
in the full shell-model space. We demonstrate that, even for the Ti isotopes,
significant benefit would be obtained in going beyond the approximation of one
broken pair of each type, while the Cr isotopes require further broken pairs to
provide even qualitative accuracy.

37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph