American scientists have described the inhomogeneity of the cosmic microwave background radiation that arose immediately after the origin of the Universe. In this regard, the authors believe that our Universe arose as a result of the collapse of the previous one. The results are published in the journal Physical Review Letters.
According to the generally accepted theory of the Big Bang, the universe began with a singularity – a state in which all matter and energy were compressed into one point. Then the space expanded to enormous proportions. But the Big Bang theory does not explain what happened before the singularity, so this state cannot be described in terms of the laws of physics and mathematics.
Scientists at Penn State University take a different view: the Big Bounce hypothesis, according to which our expanding universe arose from the super-compressed mass of the universe of the previous phase. To describe this state, they use a universal mathematical apparatus that combines quantum mechanics and the theory of relativity.
In a new study, scientists argue that, from a loop quantum cosmology perspective, describing inflation eliminates two major anomalies in the CMB distribution.
Using quantum loop cosmology, we naturally resolved two of these anomalies, avoiding a potential crisis. The presence of these anomalies suggests that we live in an exceptional universe.
Donghui Jeong, research author
The authors believe that the inhomogeneities of the CMB are the result of inevitable quantum fluctuations in the early Universe. During the accelerated expansion phase, which we already mentioned, these initially tiny fluctuations were stretched under the influence of gravity, reflected in the observed irregularities.
The conclusions of American scientists can confirm or deny new satellite missions, such as LiteBIRD and Cosmic Origins Explorer: they are aimed at detecting traces of primary gravitational waves against the background of the background radiation.