Primordial Black Holes from Collapsing Antimatter

Abstract In this paper a simple (i.e. free of fine-tuning, etc.) new mechanism for primordial black hole formation based on the collapse large antimatter systems in early Universe is introduced. A peculiarity process that, compared to their material counterparts, takes much less time due reversed thermodynamics antimatter, an idea which has been proposed our earlier Etesi (2021). This model several testable predictions. The first that photon-baryon ratio roughly computable and equal $$3.03\times 10^9$$ 3.03 × 10 9 quite close its experimentally confirmed value. second mass holes arising from at least $$10^5$$ 5 - $$10^6M_\odot$$ 6 M ⊙ hence they contribute super- or hypermassive end spectrum. third prediction these sort constitute $$20\%$$ 20 % dark matter. Last but not observed current asymmetry matter even if presence was symmetric beginning, acquires natural explanation, too.