Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic transitions in near-threshold resonances   Near-threshold collectivization of continuum shell model eigenstates is
investigated in $^{20}$O on the example of B(E$\lambda$) decays of 4$^+$ states
in the vicinity of elastic and inelastic neutron threshold. Changes of the
electromagnetic transition probabilities as a function of the
continuum-coupling strength are explained by the corresponding evolution of the
double poles of the scattering matrix.

30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int