Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sensitivity of Proposed Search for Axion-induced Magnetic Field using
  Optically Pumped Magnetometers   We investigate a search for the oscillating current induced by axion dark
matter in an external magnetic field using optically pumped magnetometers
(OPMs). This experiment is based upon the LC circuit axion detection concept of
Sikivie, Sullivan, and Tanner. The modification of Maxwell's equations caused
by the axion-photon coupling results in a minute oscillating magnetic field at
the frequency equal to the axion mass in the presence of magnetic field. This
induced magnetic field could be searched for using an LC circuit amplifier with
an OPM, the most sensitive cryogen-free magnetic-field sensor, in a room
temperature experiment, avoiding the need for a complicated and expensive
cryogenic system. We discuss how an existing magnetic resonance imaging (MRI)
experiment can be modified to search for axions in a previously unexplored part
of the parameter space. Our existing detection setup, optimized for MRI, is
already sensitive to an axion-photon coupling of $10^{-7}$ GeV$^{-1}$ for an
axion mass near $3\times10^{-10}$ eV. While this is ruled out by limits from
astrophysics and solar axion searches, we show that realistic modifications,
and optimization of the experiment for axion detection, can set a new limit on
the axion-photon coupling up to three orders of magnitude beyond the current
best limit, for axion masses between $10^{-11}$ eV and $10^{-7}$ eV.ion masses
between $10^{-11}$ eV and $10^{-7}$ eV.

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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: quant-ph