Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An alternative approach to the $\sigma$-meson-exchange in
  nucleon-nucleon interaction   Through a quantitative comparative study of the properties of deuteron and
nucleon-nucleon interaction with chiral quark model and quark delocalization
color screening model. We show that the $\sigma$-meson exchange used in the
chiral quark model can be replaced by quark delocalization and color screening
mechanism.

26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph