A new theory has been announced that the universe is expanding because it swallows and absorbs small 'baby parallel universes', and it matches the observation results more accurately than current cosmology.



The universe continues to expand at an accelerating rate, a fact

supported by observations made by the James Webb Space Telescope. The existence of dark energy has been suggested as a candidate for the force that is accelerating the expansion of the universe, but a new theory has been proposed that says it is expanding by absorbing other universes.

Is the present acceleration of the Universe caused by merging with other universes? - IOPscience
https://iopscience.iop.org/article/10.1088/1475-7516/2023/12/011

Our universe is merging with 'baby universes', causing it to expand, new theoretical study suggests | Live Science
https://www.livescience.com/space/cosmology/our-universe-is-merging-with-baby-universes-causing-it-to-expand-new-theoretical-study-suggests

Research on the cosmic microwave background radiation , the afterglow of the Big Bang, has revealed that the expansion speed of the universe is gradually increasing. In order to apply this observed fact to cosmological theory, physicists hypothesize that ``dark energy, an unknown force that fills the universe, is pushing the universe outward.'' However, while it has not been possible to confirm this, many Astrophysicists are starting to look at other possibilities.

In a study published in the academic journal Journal of Cosmology and Astroparticle Physics on December 12, 2023, scientists say, ``The expansion of the universe is caused by repeated collisions and fusions with other universes.'' proposed an idea.



Lead author of the paper, physicist Jan Ambjörn from the University of Copenhagen in Denmark, told the science news site Live Science, ``The main result of our research is that the mysterious dark energy is

driving the accelerating expansion of the universe.' ' Instead, a simpler and more intuitive explanation could be a merger with a so-called ``baby universe'', and a cosmological model for this would be more observable than the standard cosmological model. It may fit well with the data.”

The idea that our universe interacts with other universes has been proposed in the past, but Ambjörn and Yoshiyuki Watahiki of Tokyo Institute of Technology are new to the idea that other universes interact with other universes. We have developed a mathematical model to explore the hypothetical effects on the evolution of our universe. From that formula, it was derived that the merging of this universe with another universe would increase the volume of the universe, and that this could be recognized by human observation equipment as an expansion of the universe.

When the research team actually calculated the expansion rate of the universe using this theory, the results were closer to observed results than conventional cosmological models.

Moreover, this theory can also deal with the problem of cosmic inflation . The universe in which humans live is said to have expanded exponentially in the milliseconds immediately after its creation in the Big Bang, and until now, inflation has been explained as being caused by a hypothetical field called ' inflaton .' However, the identity of this inflaton is still unclear.



On the other hand, a new theory suggests that ``the reason our early universe suddenly expanded was because it was absorbed into a larger ``parent universe.'' Our universe, which was swallowed up by a larger universe and rapidly grew in size, has continued to swallow smaller baby universes and has continued to grow larger and larger until it reaches the present day.

So far, we do not know the details of the process by which the universes merge, so it cannot be confirmed whether the scenario proposed by this theory will materialize, but Dr. Watabiki told Live Science, `` Euclidean telescopes and I am confident that the James Webb Telescope's observations will help us determine which model best describes the current expansion of the universe.'

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in Science, Posted by log1l_ks