Particles Play Shy in an Expanding Universe ⚡ экспресс
Original: "Quantum dynamics of cosmological particle production: interacting quantum field theories with matrix product states"
Particles in an expanding universe actually put the brakes on their own creation when they interact, upending decades of cosmic lore.
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Empty space isn't empty. As the universe expands, it can conjure particles from nothing. But new simulations show that when these particles interact, they suppress their own birth—like too many chefs refusing to cook. This cosmic shyness changes how we think about the Big Bang's first moments.
🎯 The idea that an expanding universe can create particles from nothing was first aired by [scientist:Erwin Schrödinger]Erwin Schrödinger[/scientist] in 1939, long before [scientist:Stephen Hawking]Hawking[/scientist] applied it to black holes.