Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-nucleon Correlations in the Decay of Unbound Nuclei beyond the Drip
  Lines   We discuss the two-neutron emission decay of $^{26}$O nucleus from a
viewpoint of dineutron correlations between the valence neutrons. We first
discuss how the dineutron correlation is realized both in the coordinate space
and in the momentum space by employing a three-body model. We then discuss the
decay energy spectrum as well as the angular distribution of emitted neutrons.
We show that an emission of two neutrons in back-to-back directions is
enhanced, which we interpret as a clear manifestation of the dineutron
correlation between the valence neutrons.

33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph