Randomness rules the universe
Canadian physicist convinced Our universe is a reflection of an anti-universe
It is one of the central questions of humanity: Are we alone in the universe? Canadian scientists go one step further and ask: is our universe alone at all?
Universe of antimatter
In any case, the physicists Neil Turok and Latham Boyle from the Perimeter Institute (PI) for Theoretical Physics in Waterloo, Ontario, claim that our universe is only the mirror image of a universe of antimatter that formed on the other side of the Big Bang and that with ours Universe is connected. The two scientists still have a lot of work to do to support their theory of the "anti-universe". But they are already confident that their model will provide a natural explanation for the previously postulated but not fully proven existence of dark matter, without the movement of visible matter according to the Big Bang model - such as stars orbiting a galactic center - cannot be explained.
Criticism of "ad hoc parameters"
According to the cosmological standard model, our universe with space, time, mass and energy was created 14 billion years ago through an expansion known as the Big Bang, as a result of which subatomic particles, atoms, stars and planets were continuously formed. Turok and Boyle believe, however, that the model has so far relied too much on parameters that were developed for this special purpose ("ad-hoc parameters"). One of these parameters is therefore the short period of rapid expansion of the universe known as "inflation", which is assumed to be the cause of its great uniformity.
The two Canadian physicists, on the other hand, want to develop a model that explains all the phenomena that can be observed using only known particles and fields. You ask yourself whether there is a natural possibility for a universe to expand on the other side of the Big Bang as a mirror-inverted opposite side to our universe.
Law of CPT Symmetry
The answer lies in the assumption that the universe in its entirety is subject to CPT symmetry. According to this fundamental physical law, all physical processes remain the same even if the direction of time and space are reversed and matter is replaced by antimatter. According to PI Director Turok, this is not the case for our visible universe alone. Time runs forward in it, the universe expands and there is more matter than antimatter.
Anti-Universe and Big Bang
However, a structure that is subject to the symmetry of the CPT theorem must, according to the Canadian physicist, be a pair of universe and anti-universe. However, this would mean that the anti-universe would also reach back to the time of the Big Bang, but had expanded in the opposite direction and was ruled by antimatter instead of matter. The spatial properties of this anti-universe would be inversely comparable to those in our universe and particles would be replaced by antiparticles.
Turok compares the relationship between the universe and the anti-universe with electron-positron pairs in a vacuum. The Canadian physicist and his colleagues admit that they still have a lot of work to do to prove their theory. But they are optimistic that they will succeed and that their new model is a candidate for explaining invisible dark matter.
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