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turgid [soylentnews.org] writes:

An article in The Conversation [theconversation.com] discusses a scientific paper [preprints.org] which looks at a "gravitational bounce" from the Quantum Exclusion Principle which may take place inside black holes. The speculation is that this may form new universes.

The article states:

In a new paper, published in Physical Review D, my colleagues and I propose a striking alternative. Our calculations suggest the Big Bang was not the start of everything, but rather the outcome of a gravitational crunch or collapse that formed a very massive black hole – followed by a bounce inside it.

The general reasoning goes that inside the black hole, due to quantum effects, gravitational collapse does not result in a singularity (in contrast to predictions from Classical Physics). Due to the Quantum Exclusion Principle, the collapse is halted when a limit is reached and a bounce occurs, predicted by the Maths, producing a new universe "remarkably like our own." No new exotic theories are required to get this result.

A prediction from this theory is a small but non-zero positive spatial curvature which could be measured experimentally. Observations from the Euclid mission may be useful.

Is this plausible? It's an idea that's been about for as long as black holes have been predicted.

Original Submission