An oscillating homogeneous SU(2) condensate indirectly induces parametric resonance in U(1) helicity modes via a pseudoscalar mediator, producing a Hill equation that reduces to Mathieu form with derived resonance conditions and a non-chiral property in the periodic limit.
Parametric Res- onance and Backreaction Effects in Magnetogenesis from Ultralight Dark Matter
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A symbiotic axion-dilaton system sources a moderately chiral dark U(1) magnetic field of astrophysically relevant strength during radiation domination through tachyonic amplification without fine-tuning.
Finite conductivity of the plasma suppresses parametric resonance amplification of electromagnetic fields from ultralight pseudoscalar dark matter, making it impossible to generate magnetic fields of sufficient strength in cosmic voids for observationally viable couplings.
ALP dark matter coupled to EM via Chern-Simons produces secondary photons from fluctuations in a pre-existing cosmological magnetic field spectrum, with Lyman-Werner flux consistent with CMB and X-ray limits.
citing papers explorer
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Suppressed Magnetogenesis from Ultralight Dark Matter due to Finite Conductivity
Finite conductivity of the plasma suppresses parametric resonance amplification of electromagnetic fields from ultralight pseudoscalar dark matter, making it impossible to generate magnetic fields of sufficient strength in cosmic voids for observationally viable couplings.
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Secondary Production of Photons from ALP Dark Matter interacting with a Cosmological Magnetic Field
ALP dark matter coupled to EM via Chern-Simons produces secondary photons from fluctuations in a pre-existing cosmological magnetic field spectrum, with Lyman-Werner flux consistent with CMB and X-ray limits.