The universe is a “brane” contained within a five-dimensional “bulk” spacetime formed from a 4-dimensional black hole created by a 3-dimensional hypersphere...or something: The Big Bang theory essentially posits that the Universe was created by a singularity, or an explosion from a point of infinite density. The thing is, no one knows what caused the Big Bang—no computation or physical law (that we know of) can account for it, especially since time didn’t exist before the Universe’s creation. But it’s a question that has lingered on the minds of some scientists... Another niggling aspect of the Big Bang theory is that it doesn’t explain uniformity of the Universe’s temperature—after such a violent explosion, it’s unlikely that even by now a temperature equilibrium could have been achieved. Big Bang theorists speculate that after the singularity, the Universe expanded at a speed faster than light, creating a region of uniform temperature that then expanded into our Cosmos. Once you poke holes in one theory, you should have another at the ready. That’s where Afshordi asserts that a four-dimensional star went supernovae, sending its outer layers into space, while its inner layers formed a black hole. Afshordi’s theory is consistent with “brane cosmology,” which is a larger body of thought that the universe is a “brane” contained within a five-dimensional “bulk” spacetime....there are, obviously, two-dimensional objects contained in our three-dimensional world. But say there’s a whole stack of two dimensional objects—per brane theory, each object would comprise its own 2-D universe, but they would all still be housed in the “bulk” 3-D universe. In the case of Ashfordi’s theory, in the bulk universe, a boundary, or event horizon, inside of a 4-dimensional black hole would be created by a 3-dimensional hypersphere. giantfreakinrobot/sci/universe-formed-black-hole.html
Posted on: Wed, 18 Sep 2013 15:19:11 +0000
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