Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On recent calculations of resonances for the Stark effect in hydrogen   We show that the resonances of the Stark effect in hydrogen reported in Phys.
Rev. A \textbf{88}, 022509 (2013) are considerably less accurate than the
number of digits appear to suggest. In particular, the imaginary part of the
lowest resonance is several orders of magnitude greater than it should be. We
compare the results of that paper with those provided by the Riccati-Pad\'{e}
method, perturbation theory and an asymptotic expansion for the resonance
width. The inaccuracy of those results can be traced back to the lack of
precision in the calculation of the matrix elements of the secular equation. We
carry out a more accurate calculation with the same method and show that the
agreement with earlier results of other authors is greatly improved.

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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio