Relic abundance of dark photon dark matter
By P. Agrawal, N. Kitajima, Michael J. Reece, Toyokazu Sekiguchi, F. Takahashi. Physics Letters B, 2018
252 citations recorded by the source corpus.
We present a new mechanism for producing the correct relic abundance of dark photon dark matter over a wide range of its mass, extending down to $10^{-20}\,\mathrm{eV}$. The dark matter abundance is initially stored in an axion which is misaligned from its minimum. When the axion starts oscillating, it efficiently transfers its energy into dark photons via a tachyonic instability. If the dark photon mass is within a few orders of magnitude of the axion mass, $m_{\gamma'}/m_a = {\cal O}(10^{-3} - 1)$, then dark photons make up the dominant form of dark matter today. We present a numerical lattice simulation for a benchmark model that explicitly realizes our mechanism. This mechanism firms up the motivation for a number of experiments searching for dark photon dark matter.
Subfields: Acoustics and Ultrasonics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3b6a6e9cb9448475f7a45d2261497517e3fda070
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Dark photon dark matter produced by axion oscillations (2018, unknown): “[39, 60, 61] which also consider new production mechanisms for light vector dark matter.”
- Gravitational production of vector dark matter (2020, background): “[18–21] for the latter case.”
- Recent Progress in the Physics of Axions and Axion-Like Particles (2020, background): “They include the coupling hierarchy for the magnetogenesis [122–124], dissipative inflation [125, 126], chromonatural inflation [127, 128], reducing the abundance of the QCD axion dark matter [129, 130], production of dark photon dark matter [131, 132], ALP-photon-dark photon oscillations to explain”