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by benjaminva
2076 days ago
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The basic idea is that in the end, all matter is in black holes, the rest is radiation. You need matter in order to define space, so if there is no matter, space or rather the original space doesn't exist anymore.
You can contract all the radiation (that doesn't have a notion of space due to the lack of matter) into a new point and start something like a big bang. I think of it as redefining the space that makes the universe, rescaling the size of the whole universe. Anyway, that's my personal take on this so far. |
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We know that our spacetime is in anti de Sitter space which is a type of hyperbolic geometry. In this geometry, infinity can be thought of as the edge of a sphere containing our universe.
Matter is equivalent not only to energy, but also to frequency and wavelength. Once all matter decays to photons and those photons hit infinity, there isn't anything remaining in the universe that provides any sense of scale. It could be argued that the concepts of frequency, wavelength, time, and length cease to exist.
Since you no longer can measure scale, all those photons at infinity look very similar to the photons in the primordial soup of the big bang. Furthermore there could theoretically be information transfer as the pattern of photons on the sphere vs. the pattern of the primordial soup (visible today as the cosmic background radiation) would be the same.