Primordial Black-Hole Dark Matter via Warm Natural Inflation

Abstract

We report on a study of the natural warm inflationary paradigm (WNI). We show two important new results arise in this model. One is that the observational constraints on the primordial power spectrum from the cosmic microwave background (CMB) can be satisfied without going beyond the Planck scale of the effective field theory. The second is that WNI can inevitably provide perfect conditions for the production of primordial black holes (PBHs) in the golden window of black-hole mass range ($10^{-16}-10^{-11}{M}_{\odot }$) where it can account for all of the the dark matter content of the universe while satisfying observational constraints.

6 pages, 2 figures, Minor corrections added. Figure is modified to incorporate cold inflationary power spectrum. Published in PLB

References in corpus (5)

• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Primordial Black Holes as Dark Matter: Recent Developments
• Primordial black hole dark matter from single field inflation
• Warm inflation dissipative effects: predictions and constraints from the Planck data
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Cited by in corpus (3)

• Recent developments in warm inflation
• Observational Constraints on Warm Natural Inflation
• Primordial Black Hole Formation in Non-Standard Post-Inflationary Epochs