Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The isovector effective charge and the staggering of the 2+ to 0+
  transition probabilities in the Titanium isotopes   In an effort to understand the magical status of N=32 and N=34 at the very
neutron rich edge, experiments have been carried out in the Titanium isotopes
up to A=56. The measured staggering of the B(E2)'s is not reproduced by the
shell model calculations using the best effective interactions. We argue that
this may be related to the choice of the isovector effective charge and to the
value of the N=34 neutron gap.

18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con