Baryon asymmetry from primordial black holes

Hamada, Yuta; Iso, Satoshi

doi:10.1093/ptep/ptx011

Cited by 60 publications

(39 citation statements)

References 60 publications

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“…A reheat temperature this low is very impactful as it strongly favors reheat temperatures lower than the scale at which electroweak sphalerons are active. This limits the available baryogenesis mechanisms and pushes one to consider black hole assisted baryogenesis mechanisms [30,37,[58][59][60][61][62][63][64][65][66][67]. Additionally, many models of black hole production in the early universe produce only a sub-population of black holes, e.g.…”

Section: Jhep12(2021)145mentioning

confidence: 99%

Black hole production of monopoles in the early universe

Das

Hook

2021

J. High Energ. Phys.

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In the early universe, evaporating black holes heat up the surrounding plasma and create a temperature profile around the black hole that can be more important than the black hole itself. As an example, we demonstrate how the hot plasma surrounding evaporating black holes can efficiently produce monopoles via the Kibble-Zurek mechanism. In the case where black holes reheat the universe, reheat temperatures above ∼ 500 GeV can already lead to monopoles overclosing the universe.

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Section: Jhep12(2021)145mentioning

confidence: 99%

Black hole production of monopoles in the early universe

Das

Hook

2021

J. High Energ. Phys.

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“…The direct detection of gravitational waves [3] has triggered renewed interest in the role black holes might play in connection with these two outstanding open questions (see e.g. [4][5][6] and references therein). The idea that black hole evaporation can lead to the production of particles in the early universe and possibly to the generation of a baryon asymmetry or of dark matter has a rather long history.…”

mentioning

confidence: 99%

Melanopogenesis: dark matter of (almost) any mass and baryonic matter from the evaporation of primordial black holes weighing a ton (or less)

Morrison

Profumo

Yan

2019

J. Cosmol. Astropart. Phys.

138

122

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The evaporation of primordial black holes with a mass in the 1 gram M PBH 1000 kg range can lead to the production of dark matter particles of almost any mass in the range 0.1 MeV m DM 10 18 GeV with the right relic density at very early times, τ 10 −10 s. We calculate, as a function of the primordial black holes mass and initial abundance, the combination of dark matter particle masses and number of effective dark degrees of freedom leading to the right abundance of dark matter today, whether or not evaporation stops around the Planck scale. In addition, since black hole evaporation can also lead to the production of a baryon asymmetry, we calculate where dark matter production and baryogenesis can concurrently happen, under a variety of assumptions: baryogenesis via grand unification boson decay, via leptogenesis, or via asymmetric co-genesis of dark matter and ordinary matter. Finally, we comment on possible ways to test this scenario.

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“…Baryogenesis initiated by USR inflation is a mechanism in parallel with that of PBH formation, and can be realized even without the presence of any PBHs today. Thus it is not identical to the idea where baryon asymmetry of the Universe is created by existing PBHs [32][33][34][35][36][37][38][39][40], providing a different insight to the cosmic coincidence between dark matter and baryon densities sourced by PBHs [41,42] or originated from the asymmetric dark sector in particle physics [43][44][45][46]. Based on the assumption of PBH dark matter, the scenario investigated in this work allows a more systematic study on the viable parameter space for the cosmic coincidence problem as model parameters of the USR inflation simultaneously control the dark matter density and the baryon asymmetry of the Universe.…”

Section: Jhep01(2022)015mentioning

confidence: 99%

Baryogenesis from ultra-slow-roll inflation

Pinetti

Petraki

et al. 2022

J. High Energ. Phys.

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The ultra-slow-roll (USR) inflation represents a class of single-field models with sharp deceleration of the rolling dynamics on small scales, leading to a significantly enhanced power spectrum of the curvature perturbations and primordial black hole (PBH) formation. Such a sharp transition of the inflationary background can trigger the coherent motion of scalar condensates with effective potentials governed by the rolling rate of the inflaton field. We show that a scalar condensate carrying (a combination of) baryon or lepton number can achieve successful baryogenesis through the Affleck-Dine mechanism from unconventional initial conditions excited by the USR transition. Viable parameter space for creating the correct baryon asymmetry of the Universe naturally incorporates the specific limit for PBHs to contribute significantly to dark matter, shedding light on the cosmic coincidence problem between the baryon and dark matter densities today.

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Baryon asymmetry from primordial black holes

Cited by 60 publications

References 60 publications

Black hole production of monopoles in the early universe

Black hole production of monopoles in the early universe

Melanopogenesis: dark matter of (almost) any mass and baryonic matter from the evaporation of primordial black holes weighing a ton (or less)

Baryogenesis from ultra-slow-roll inflation

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