Dark Matter: The Annihilation Fireworks ⚡ экспресс
Original: "Dark matter relic abundance from a critical-density instability"
One brief burst of mutual annihilation set the amount of dark matter in the universe.
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In the early universe, dark matter particles formed a quantum “crowd,” where annihilation was suppressed. As expansion reduced density, the shield broke — and a burst of self-destruction began. Today’s dark matter is the ashes of that fireworks show.
🎯 If the universe had expanded just a little slower, the protective density would have lasted longer, and dark matter would have vanished entirely — along with any chance for galaxies to form.