Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In search of the electron electric dipole moment: relativistic
  correlation calculations of the P,T-violation effect in the ground state of
  HI$^+$   We report the first results of ab initio relativistic correlation calculation
of the effective electric field on the electron, E_eff, in the ground state of
the HI$^+$ cation. This value is required for interpretation of the suggested
experiment on search for the electron electric dipole moment. The generalized
relativistic effective core potential, Fock-space relativistic coupled cluster
with single and double cluster amplitudes and spin-orbit direct configuration
interaction methods are used, followed by nonvariational one-center restoration
of the four-component wavefunction in the iodine core. The calculated value of
E_eff by the coupled cluster method is E_eff=0.345\times 10^{24}Hz/e*cm.
Configuration interaction study gives E_eff=0.336\times 10^{24}Hz/e*cm (our
final value). The structure of chemical bonding and contributions to E_eff in
HI$^+$ is clarified and significant deviation of our value from that obtained
in Ravaine etal Phys.Rev.Lett., 94, 013001 (2005) is explained.

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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: cs
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci