AI-powered
podcast player
Listen to all your favourite podcasts with AI-powered features
The Future of the Universe
All standard cosmologies have the property that you can stretch out the Big Bang in those models to make it nice and smooth. But almost all models, if you think of what possible things that can be in Einstein's equations, they're a great mess at the beginning. Those ones which do have a nice smooth Big Bang are ones that you could say that the gravitation degrees of freedom are killed off right at the beginnng.