An international team of researchers has found an opportunity to describe how our universe came about as a result of the Great Bounce. Note that the dominant cosmological model is the so-called. Big Bang.
The findings of Canadian and British theoretical physicists can be found in Physical Review Letters, and an overview is available in New Scientist. As you know, now the so-called. the Big Bang theory, which assumes that the universe emerged from a singularity state.
An alternative hypothesis for the appearance of the universe is the so-called. Big bounce. This model assumes a cyclical development, within which the Universe contracts and expands, and these stages replace each other. Thus, if we proceed from this hypothesis, our Universe arose as a result of the “disintegration” of another - the previous one.
It should be noted that the hypothesis of disintegration itself is not something new: it was proposed about a hundred years ago. The scientific world, meanwhile, has not revealed a mechanism that describes how the period of contraction passes into the period of expansion. Now physicists from Canada and Great Britain have created a theoretical model demonstrating that the contraction and expansion of the Universe can be compared with a phenomenon called quantum mechanical tunneling: in this case, we are talking about overcoming a certain barrier by a particle that has an insufficient supply of energy. This phenomenon is quantum and cannot be described within the framework of classical physics.
Researchers do not want to stop there: in the future, they want to study the evolution of the Universe, in particular the emergence of structures such as galaxy clusters.
Earlier, we recall, another team of specialists came to the conclusion that our Universe is expanding faster than expected. Representatives of the European Information Center for Astrophysics believe that the real expansion rate may exceed the assumed one by 5-8%.