Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-Lying 2+ states in neutron-rich oxygen isotopes in quasiparticle
  random phase approximation   The properties of the low-lying, collective 2+ states in neutron-rich oxygen
isotopes are investigated in the framework of self-consistent microscopic
models with effective Skyrme interactions. In RPA the excitation energies E2+
can be well described but the transition probabilities are much too small as
compared to experiment. Pairing correlations are then accounted for by
performing quasiparticle RPA calculations. This improves considerably the
predictions of B(E2) values and it enables one to calculate more reliably the
ratios Mn/Mp of neutron-to-proton transition amplitudes. A satisfactory
agreement with the existing experimental values of Mn/Mp is obtained.

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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
37
The categories of this paper are: supr-con