Dark matter from eternal inflation ⚡ экспресс
Original: "Dark Matter from Eternity"
All dark matter could be a swarm of tiny black holes born from the universe's eternal expansion.
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Did the universe never stop expanding? In some pockets, inflation lasts forever. These ‘unfinished’ regions collapse into tiny black holes, which make up all dark matter. And this process also creates a barely detectable hum of gravitational waves—one we’ll be able to hear.
🎯 A single primordial black hole can be smaller than an atom but weigh as much as a mountain.
\Omega_\text{GW} h^2 \simeq 10^{-10}
The ratio of gravitational wave energy to the critical density of the universe—one ten-billionth.