Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Axion Dark Matter Detection by Superconducting Resonant Frequency
  Conversion   We propose an approach to search for axion dark matter with a specially
designed superconducting radio frequency cavity, targeting axions with masses
$m_a \lesssim 10^{-6} \text{ eV}$. Our approach exploits axion-induced
transitions between nearly degenerate resonant modes of frequency $\sim$ GHz. A
scan over axion mass is achieved by varying the frequency splitting between the
two modes. Compared to traditional approaches, this allows for parametrically
enhanced signal power for axions lighter than a GHz. The projected sensitivity
covers unexplored parameter space for QCD axion dark matter for $10^{-8} \text{
eV} \lesssim m_a \lesssim10^{-6} \text{ eV}$ and axion-like particle dark
matter as light as $m_a \sim 10^{-14} \text{ eV}$.

30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg