Gravitational waves from dark matter isocurvature

Domènech, Guillem; Passaglia, Samuel; Renaux-Petel, Sébastien

doi:10.48550/arxiv.2112.10163

Cited by 2 publications

(2 citation statements)

References 115 publications

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“…Ref. [89] noted that the isocurvature perturbation of PBHs (and of dark matter in general [91]) induces additional tensor modes. As discussed in Sec.…”

Section: Isocurvature-induced Gwsmentioning

confidence: 99%

Reheating in runaway inflation models via the evaporation of mini primordial black holes

Dalianis¹,

Kodaxis²

2021

Preprint

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We investigate the cosmology of mini Primordial Black Holes (PBHs) produced by large density perturbations that collapse during a stiff fluid domination phase. Such a phase can be realized by a runaway-inflaton model that crosses an inflection point or a sharp feature at the last stage of inflation. Mini PBHs evaporate promptly and reheat the early universe. In addition, we examine two notable implications of this scenario: the possible presence of PBH evaporation remnants in galaxies and a non-zero residual potential energy density for the runaway inflaton that might play the role of the dark energy. We specify the parameter space that this scenario can be realized and we find that a transit PBH domination phase is necessary due to gravitational wave (GW) constraints. A distinct prediction of the scenario is a compound GW signal that might be probed by current and future experiments. We also demonstrate our results employing an explicit inflation model.

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“…Ref. [89] noted that the isocurvature perturbation of PBHs (and of dark matter in general [91]) induces additional tensor modes. As discussed in Sec.…”

Section: Isocurvature-induced Gwsmentioning

confidence: 99%

Reheating in runaway inflation models via the evaporation of mini primordial black holes

Dalianis¹,

Kodaxis²

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Only quite recently, the PBH formation from isocurvature perturbations of the cold dark matter was considered [5] (see also Ref. [6] for the possible detection of gravitational waves from large dark matter isocurvature).…”

Section: Introductionmentioning

confidence: 99%

Primordial black hole formation from massless scalar isocurvature

Yoo,

Harada,

Hirano

et al. 2021

Preprint

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Gravitational waves from dark matter isocurvature

Cited by 2 publications

References 115 publications

Reheating in runaway inflation models via the evaporation of mini primordial black holes

Reheating in runaway inflation models via the evaporation of mini primordial black holes

Primordial black hole formation from massless scalar isocurvature

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