V.R230 — The mass gap and the IMBH desert

The primorial mass hierarchy predicts a natural gap in the BH mass spectrum between supermassive (10^6-10^10 M_sun) and stellar-mass (3-100 M_sun) black holes, with intermediate-mass BHs (10^2-10^5 M_sun) scarce. This is consistent with the observational IMBH desert.