Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electric quadrupole shifts of the precession frequencies of $^{131}$Xe
  atoms in rectangular cells   We study an atomic comagnetometer design based on the spin precessions of
$^{129}$Xe and $^{131}$Xe atoms in glass cells. The quadrupole splittings in
the precession spectrum of $^{131}$Xe are fully resolved, allowing a precise
determination of the magnetic-dipole precession frequency. The transverse
asymmetry of quadrupole interactions, due to both the geometry and surface
properties of the cell, characterized by a non-zero asymmetry parameter $\eta$,
modifies the dependence of the quadrupole splittings on the relative
orientation between the cell axes and the bias magnetic field, and lead to
additional corrections in the precession frequencies of $^{131}$Xe atoms. We
examine these effects both theoretically and experimentally, and develop
methods to quantify and control such shifts.

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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs