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

Marcos M. Flores; Alexander Kusenko

doi:10.1088/1475-7516/2023/05/013

paper

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

arXiv:2108.08416 · doi:10.1088/1475-7516/2023/05/013

Abstract

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 $Λ \sim 100$ TeV, the black hole masses are of the order of $(M_{Planck}^{3} / Λ^{2}) \sim 1 0^{22}$ 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.

arXiv comment14 pages, 1 figure

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

Abstract

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