Multiverse — in which there is, and our universe may not be so hostile to life than previously anticipated, according to a new study. The only question is whether there are other universes. Scientists from Durham University, the University of Western Sydney and University of Western Australia showed that life could be common in the multiverse, if it exists. The culprit — what do you think? is dark energy. Mysterious "force" that accelerates the expansion of the Universe.
Scientists say that existing theories of the origin of the Universe predict much more dark energy than observed. The addition of large amounts of dark energy would lead to such rapid expansion that the matter would be shattered before he would have formed stars, planets or life.
The Theory of multiple universe, or multiverse, is presented in the 1980-ies, may explain the "lucky little" amount of dark energy in our Universe, which enabled her to shelter life, among the many universes that failed.
Using powerful computer modeling of the cosmos, scientists have found that the addition of dark energy, up to several hundred times higher than the number observed in the Universe will not have a major impact on the formation of stars and planets.
This opens up the possibility that life could appear in other universes, if they exist, scientists say. The work was published in the Monthly notes of the Royal astronomical society.
The Simulations were carried out in the framework of the project EAGLE (Evolution and Assembly of GaLaxies and their Environments), one of the most realistic models of the observable Universe. Jaime Salcido, post-graduate student Institute of computational cosmology of Durham University, said: "For many physicists inexplicable, but, apparently, the particular amount of dark energy in our Universe is a frustrating mystery."
"Our models show that even if the Universe were much more or much less dark energy, this would have a minimal effect on the formation of stars and planets, giving a chance for the emergence of life across the multiverse".
Dr. Luke Barnes, research fellow, University of Western Sydney, adds: "Previously, multiverse explained the observed value of dark energy as a lottery — we got the winning ticket, and we live in a Universe where there is a beautiful galaxy, giving life a chance."
"Our work shows that our service was too good, so to speak. He's too special, life is not so much need."
Question: how much dark energy until life becomes impossible? Modeling has shown that the accelerated expansion due to dark energy, has virtually no effect on the birth of stars, and thus to place the emergence of life. Even the increase of dark energy in the hundreds of times will not be enough to make the universe dead.
The Researchers said that their results were unexpected and may be problematic because it questioned the ability of the theory of the multiverse to explain the observed value of dark energy. According to the study, if we live in a multiverse, we should observe much more dark energy than the observed; perhaps 50 times greater than observed in our Universe.
Although the results do not exclude the existence of multiple universes, they hint that a small amount of dark energy in our Universe is better explained has not been opened yet the law of nature. The theory of multiple universes does not relieve physicists from discomfort: they will have to find another reason for the negligible amount of dark energy in our world.
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