Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Question of Low-Lying Intruder States in $^8Be$ and Neighboring
  Nuclei   The presence of not yet detected intruder states in $^{8}Be$ e.g. a $J=2^{+}$
intruder at 9 $MeV$ excitation would affect the shape of the $\beta ^{\mp
}$-delayed alpha spectra of $^{8}Li$ and $^{8}B$. In order to test the
plausibility of this assumption, shell model calculations with up to $4\hbar
\omega $ excitations in $^{8}Be$ (and up to $2\hbar \omega $ excitations in
$^{10}Be$) were performed. With the above restrictions on the model spaces, the
calculations did not yield any low-lying intruder state in $^{8}Be$. Another
approach -the simple deformed oscillator model with self-consistent frequencies
and volume conservation gives an intruder state in $^{8}Be$ which is lower in
energy than the above shell model results, but its energy is still considerably
higher than 9 $MeV$.

4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol