Could our universe have emerged from the heart of a black hole?
The standard story of the Big Bang begins with a singularity of infinite density. But new research suggests we might avoid this mathematical breakdown entirely, proposing instead that our universe is the result of a cosmic bounce.
The traditional cosmological model, rooted in Einstein's 1910s general relativity, describes the universe expanding from an infinitesimal point. However, this singularity presents a deep theoretical problem where the known laws of physics break down. To maintain the model's success, physicists have had to introduce unobserved ingredients like cosmic inflation and dark energy.
A new paper published in Physical Review D proposes a 'black hole universe' model. Rather than a singular beginning, researchers suggest the Big Bang may have been the outcome of a gravitational collapse that formed a massive black hole, followed by a bounce. While Roger Penrose's 1965 singularity theorems suggest collapse must lead to a singularity, these rely on classical physics. By incorporating quantum mechanics, this new analytical solution shows that a collapsing cloud of matter can reach high density and then rebound into a new expanding phase.
Source: What If The Universe DID NOT Start With The Big Bang?
