Revisiting the Affleck-Dine mechanism for primordial black hole formation

Abstract

We study a primordial black hole (PBH) formation scenario based on the Affleck-Dine (AD) mechanism and investigate two PBH mass regions: $M\sim 30M_{\odot }$ motivated by the LIGO-Virgo observations of the binary black hole mergers and $M\gtrsim 10^4{M}_{\odot }$ motivated by the observations of supermassive black holes at the center of galaxies. In the previous studies, it has been considered that the inhomogeneous AD baryogenesis generates regions with a large baryon asymmetry, some of which collapse into PBHs. In this paper, we show that this scenario is severely constrained due to the baryon asymmetry remaining outside PBHs, which would spoil the success of the big bang nucleosynthesis. Then, we propose an alternative scenario where the AD leptogenesis results in the inhomogeneous formation of Q-balls with lepton charges, which collapse into PBHs. As a result, we find that our scenario can explain the favorable PBH abundance without conflicting with the observational constraints.

25 pages, 9 figures, v3 : Fig.4 is revised, as well as the factors included in Eqs. (2.10), (4.26), and (4.39). The conclusion is not changed

References in corpus (24)

• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Primordial Black Holes as Dark Matter
• Cosmic microwave background limits on accreting primordial black holes
• The merger rate of primordial-black-hole binaries
• Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
• Grackle: a Chemistry and Cooling Library for Astrophysics
• Thermal production of gravitinos
• A precision calculation of relic neutrino decoupling
• Gravitational Wave signatures of inflationary models from Primordial Black Hole Dark Matter
• Understanding caustic crossings in giant arcs: characteristic scales, event rates, and constraints on compact dark matter
• GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• Primordial Black Holes Confront LIGO/Virgo data: Current situation
• The end of the MACHO era- revisited: new limits on MACHO masses from halo wide binaries
• Primordial black holes from a cosmic phase transition: The collapse of Fermi-balls
• Constraints on the induced gravitational wave background from primordial black holes
• Testing scenarios of primordial black holes being the seeds of supermassive black holes by ultracompact minihalos and CMB $\mu$-distortions
• Primordial black holes from inflaton and spectator field perturbations in a matter-dominated era
• Inhomogeneous baryogenesis, cosmic antimatter, and dark matter
• Supermassive black holes formed by direct collapse of inflationary perturbations
• Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field
• Primordial black holes from an electroweak phase transition
• Lepton Asymmetric Universe
• The primordial black hole from running curvaton
• Strong clustering of primordial black holes from Affleck-Dine mechanism

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• Primordial Black Holes Formation Beyond the Standard Cosmic QCD Transition