Strong clustering of primordial black holes from Affleck-Dine mechanism

Kawasaki, Masahiro; Murai, Kai; Nakatsuka, Hiromasa

doi:10.48550/arxiv.2107.03580

Cited by 2 publications

(2 citation statements)

References 80 publications

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“…The cluster of primordial black holes (PBH) can be responsible for such regions. Formation of PBH clusters and their possible observational effects are now of special interest [2][3][4][5][6][7][8][9][10][11][12][13], but we do not constrain possibility of such regions appearance by PBH clusters only. PBH and their cluster formation can be the consequence of existence and breaking of some new symmetry in quantum field theory [2,14,15].…”

Section: Introductionmentioning

confidence: 99%

Hot Primordial Regions with Anomalous Hydrogenless Chemical Composition

Belotsky

Rubin

et al. 2022

Symmetry

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We study primordial nucleosynthesis in hypothetical hot regions that could be formed by the primordial density inhomogeneities. It is shown that the regions that survived up to the present times acquire an abnormally high metallicity. This conclusion holds in a wide range of initial parameters of such regions. We considered the thermonuclear reaction rates and estimated abundances of deuterium and helium-3 and -4 inside these areas. It has been established that all baryons tend to form helium-4, which is the thermonuclear link in the chain of formation of heavier elements.

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Section: Introductionmentioning

confidence: 99%

Hot Primordial Regions with Anomalous Hydrogenless Chemical Composition

Belotsky

Rubin

et al. 2022

Symmetry

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“…This channel for PBH formation is based on gravitational interaction. Some other possibilities exist for PBH formation from Affleck-Dine baryogenesis [58][59][60].…”

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confidence: 99%

Primordial black holes as a dark matter candidate in theories with supersymmetry and inflation

Flores¹,

Kusenko²

2021

Preprint

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We show that supersymmetry and inflation, in a broad class of models, generically lead to formation of primordial black holes (PBHs) that can account for dark matter. Supersymmetry predicts a number of scalar fields that develop a coherent condensate along the flat directions of the potential at the end of inflation. The subsequent evolution of the condensate involves perturbative decay, as well as fragmentation into Q-balls, which can interact by some long-range forces mediated by the scalar fields. The attractive scalar long-range interactions between Q-balls facilitates the growth of Q-balls until their ultimate collapse to black holes. For a flat direction lifted by supersymmetry breaking at the scale Λ ∼ 100 TeV, the black hole masses are of the order of (4π) 3/2 (M 3 Planck /Λ 2 ) ∼ 10 23 g, in the allowed range for dark matter. Similar potentials with a lower scale Λ (not necessarily associated with supersymmetry) can result in a population of primordial black holes with larger masses, which can explain some recently reported microlensing events.

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Strong clustering of primordial black holes from Affleck-Dine mechanism

Cited by 2 publications

References 80 publications

Hot Primordial Regions with Anomalous Hydrogenless Chemical Composition

Hot Primordial Regions with Anomalous Hydrogenless Chemical Composition

Primordial black holes as a dark matter candidate in theories with supersymmetry and inflation

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