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arxiv 1807.03308 v1 pith:Z6L37ZU6 submitted 2018-07-09 hep-ph astro-ph.CO

WIMPflation

classification hep-ph astro-ph.CO
keywords inflatonannihilationsdarkmatteruniverseaccommodatebackgroundcandidate
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We propose a class of models in which a stable inflaton is produced as a thermal relic in the early universe and constitutes the dark matter. We show that inflaton annihilations can efficiently reheat the universe, and identify several examples of inflationary potentials that can accommodate all cosmic microwave background observables and in which the inflaton dark matter candidate has a weak scale mass. As a simple example, we consider annihilations that take place through a Higgs portal interaction, leading to encouraging prospects for future direct detection experiments.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Inflaton Regeneration via Scalar Couplings: Generic Models and the Higgs Portal

    hep-ph 2026-04 unverdicted novelty 7.0

    For monomial inflationary potentials with k≥4, the inflaton regenerates from the thermal bath after reheating because its amplitude-dependent mass vanishes asymptotically.

  2. Irreducible Graviton Floor from Reheating

    hep-ph 2026-05 unverdicted novelty 5.0

    Perturbative inflaton decay emits an irreducible stochastic GW background with Ω_GW ∝ f spectrum whose amplitude is set by the hard decay rate and reaches O(10^{-17}) at GHz scales.

  3. Low-reheating scenario in dark Higgs inflation and its impact on dark photon dark matter production

    hep-ph 2025-11 unverdicted novelty 5.0

    A dark U(1)_D model with dark Higgs inflation and low reheating allows dark photon dark matter to achieve the observed relic density for a wider range of couplings, with inflation predictions matching Planck, BICEP/Ke...