Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Attosecond time delay in valence photoionization and photorecombination
  of argon: a TDLDA study   We determine and analyze the quantum phases and time delays in
photoionization and photorecombination of valence 3p and 3s electrons of argon
using the Kohn-Sham local density functional approach. The time-dependent local
density approximation (TDLDA) is used to account for the electron correlation.
Resulting attosecond Wigner-Smith time delays show excellent agreements with
two recent independent experiments on argon that measured the relative 3s-3p
time delay in photoionization [Physical Review Letters {\bf 106}, 143002
(2011)] and the delay in 3p photorecombination [Physical Review Letters {\bf
112}, 153002 (2014)]

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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: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int