Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nuclear-polarization effect to the hyperfine structure in heavy
  multicharged ions   We have investigated the correction to the hyperfine structure of heavy
multicharged ions, which is connected with the nuclear-polarization effect
caused by the unpaired bound electron. Numerical calculations are performed for
hydrogenlike ions taking into account the dominant collective nuclear
excitations. The correction defines the ultimate limit of precision in accurate
theoretical predictions of the hyperfine-structure splittings.

13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat