Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Model-independent determinations of the electron EDM and the role of
  diamagnetic atoms   We perform model-independent analyses extracting limits for the electric
dipole moment of the electron and the P,T-odd scalar-pseudoscalar (S-PS)
nucleon-electron coupling from the most recent measurements with atoms and
molecules. The analysis using paramagnetic systems, only, is improved
substantially by the inclusion of the recent measurement on HfF+ ions, but
complicated by the fact that the corresponding constraints are largely aligned,
owing to a general relation between the coefficients for the two contributions.
Since this same relation does not hold in diamagnetic systems, it is possible
to find atoms that provide essentially orthogonal constraints to those from
para\-magnetic ones. However, the coefficients are suppressed in closed-shell
systems and enhancements of P,T-odd effects are only prevalent in the presence
of hyperfine interactions. We formulate the hyperfine-induced
time-reversal-symmetry breaking S-PS nucleon-electron interaction in general
atoms in a mixed perturbative and variational approach, based on electronic
Dirac-wavefunctions including the effects of electron correlations. The method
is applied to the Hg atom, yielding the first direct calculation of the
coefficient of the S-PS nucleon-electron coupling in a diamagnetic system. This
results in additionally improved model-independent limits for both the electron
EDM and the nucleon-electron coupling from the global fit. Finally we employ
this fit to provide indirect limits for several paramagnetic systems under
investigation.

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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph