Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiconfiguration calculations of electronic isotope shift factors in
  Zn I   The present work reports results from systematic multiconfiguration
Dirac-Hartree-Fock calculations of electronic isotope shift factors for a set
of transitions between low-lying states in neutral zinc. These electronic
quantities together with observed isotope shifts between different pairs of
isotopes provide the changes in mean-square charge radii of the atomic nuclei.
Within this computational approach, different models for electron correlation
are explored in a systematic way to determine a reliable computational strategy
and to estimate theoretical error bars of the isotope shift factors.

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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int