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Dark photon constraints from CMB temperature anisotropies
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abstract
The resonant conversion, within the inter-galactic medium, of regular photons into dark photons amplifies the anisotropy observed in the CMB, thereby imposing stringent constraints on the existence of light dark photons. In this study, we investigate the impact of light dark photons, with masses in the range $3\times 10^{-15} ~\rm{eV} < m_{A'} < 3\times 10^{-12}~\rm{eV}$ on the power spectrum of temperature anisotropies within the cosmic microwave background (CMB) radiation utilizing the state-of-the-art large-volume FLAMINGO cosmological simulations. Our results show that using full Planck data, one can expect the existing constraints on the dark photon mixing parameter in this mass range to improve by an order of magnitude.
Forward citations
Cited by 2 Pith papers
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Dark Photons in the Early Universe: From Thermal Production to Cosmological Constraints
Dark photon thermal production is computed analytically, yielding a fixed 4πe/27 ≈ 0.14 resonance-to-inverse-decay ratio and new cosmological limits down to ε~10^-12 over 0.1–6 MeV.
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Methodology for constraining ultralight vector bosons with gravitational wave searches targeting merger remnant black holes
A framework is proposed to marginalize over black hole parameter uncertainties when setting exclusion limits on ultralight vector bosons from gravitational wave non-detections, with extensions to dark photon and dark ...
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