Formation and growth of Primordial Black-Hole Dark Matter from Warm Natural Inflation
Prof. Grant Mathews
Department of Physics and Astronomy
University of Notre Dame
In previous work [1] we have shown that within the natural warm inflationary paradigm (WNI) 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. Moreover, 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 to 10^-11} M(solar)) where it can account for all of the the dark matter content of the universe while satisfying observational constraints. In this talk we review the contributions from this form of dark matter to the gravitational wave background, and the prospects for this type of low-mass PBH dark matter to merge into early seeds of galaxy formation and super-massive black holes at high redshift.
[1] M. Correa, M. R. Gangopadhyay, N. Jaman, G. J. Mathews, Phys. Lett. B835, 137510 (2022).
[2] M. Correa, M. R. Gangopadhyay, N. Jaman, G. J. Mathews, Phys. Rev. D, (2024).