The Expanding Universe Requires a Departure From Unitarity in Quantum Mechanics

Many believe that the expanding universe requires a departure from unitarity in quantum mechanics. At face value, I think that that particular tension is overblown. There's no necessary reason just because the universe is expanding that you need to violate unitarity. Jesse Rimmler: The Russian invasion of Ukraine is a horrific crime and Russia is responsible. He says it is right for the US to apply pressure to initiate peace talks. But he doesn't see many grappling with where this conflict is headed.