Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction for a four-neutron resonance   We utilize various {\em ab initio} approaches to search for a low-lying
resonance in the four-neutron ($4n$) system using the JISP16 realistic $NN$
interaction. Our most accurate prediction is obtained using a $J$-matrix
extension of the No-Core Shell Model and suggests a $4n$ resonant state at an
energy near $E_r = 0.8$ MeV with a width of approximately $\Gamma = 1.4$ MeV.

26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys