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Vector dark matter production from inflation with symmetry breaking
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Vector dark matter production from inflation with symmetry breaking
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We present a scenario of vector dark matter production from symmetry breaking at the end of inflation. In this model, the accumulated energy density associated with the quantum fluctuations of the dark photon accounts for the present energy density of dark matter. The inflaton is a real scalar field while a heavy complex scalar field, such as the waterfall of hybrid inflation, is charged under the dark gauge field. After the heavy field becomes tachyonic at the end of inflation, rolling rapidly towards its global minimum, the dark photon acquires mass via the Higgs mechanism. To prevent the decay of the vector field energy density during inflation, we introduce couplings between the inflaton and the gauge field such that the energy is pumped to the dark sector. The setup can generate the observed dark matter abundance for a wide range of the dark photon's mass and with the reheat temperature around $10^{12}$ GeV. The model predicts the formation of cosmic strings at the end of inflation with the tensions which are consistent with the CMB upper bounds.
Forward citations
Cited by 5 Pith papers
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Dark Photon Dark Matter from Quantum Fluctuations during Starobinsky Inflation
Dark photons produced by quantum fluctuations during Starobinsky inflation must have a mass of 5.6–7.4 µeV to be all the dark matter.
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Parametric Resonance of Higgsed Vector Dark Matter: Inflationary Initial Conditions and Sourced Displacements
Stochastic inflationary fluctuations cannot supply the large dark-Higgs displacement required for broad parametric resonance production of vector dark matter, but a classically sourced Hubble-induced minimum can, with...
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Post-Inflationary Quenched Production of Axion SU(2) Dark Matter
Post-inflationary axion-SU(2) vector dark matter production is recast as a quantum quench with a survival factor that induces an O(1) renormalization of the standard relic abundance.
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Misalignment production of isotropized vector dark matter?
Kinetic-coupling misalignment of an isotropized multi-vector condensate cannot produce dark matter: non-Gaussianity and isocurvature constraints exclude the viable parameter space in both weak- and strong-mixing regimes.
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Misalignment production of isotropized vector dark matter?
Isotropized multi-vector misalignment dark matter from kinetic coupling is excluded because non-Gaussianity and isocurvature bounds require incompatible mixing strengths.
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