Dark matter may be considered as the universe’s biggest mystery. It is known that something makes objects faster than they should but we do not actually know what it is and where it came from.
The origins of dark matter might be even more peculiar than it is known. They might be particles that appeared for a very brief amount of time before the Big Bang occurred. This not only suggests a new connection between astronomy and particle physics, but it could also indicate a new technique for searching mysterious stuff.
Tommi Tenkanen, a physicist at Johns Hopkins University said that if the dark matter comprises of new particles which were born before Big Bang then it affects the distribution of the galaxies in a unique manner. The connection may bring new conclusions about the time before Big Bang too. The paper by Tommi Tenkanen has been published in the journal Physical Review Letters.
The beginning of the Universe is a murky time period and the order of events is tangled up. It is still being debated about the events Big Bang comprised of. There is also cosmic inflation, a very small time period in which the Universe expanded like a balloon. It is accepted that it occurred in the range of 10-36 to 10-32 seconds after Big Bang took place. Some scientists feel that it occurred just before Big Bang took place. Avi Loeb, Hardvard-Smithsonian physicist said that cosmic inflation right now is a flexible idea which cannot be falsified experimentally.
Dark matter which comprises 80 percent of matter present in the Universe is considered Big Bang’s product sometimes. However, scientists feel if it were truly a product of Big Bang, there would have been evidences in experiments of particle physics. Instead, Tenkanen’s mathematical modelling suggests that it could have been a result of cosmic inflation. If cosmic inflation occurred before Big Bang then it implies that dark matter was present before everything in the Universe.
It also brings the idea that scalar particles could lead to dark matter. These particles have a spin of zero and according to inflaton theory, they were produced during cosmic inflation in a blink of the eye. The detection of Higgs boson, a scalar particle did not tell us much about dark matter.
Dark matter might be revealed in astronomical observations. We might know more about the origin of dark matter after the launch of the Euclid satellite in 2022. It might present some interesting revelations about Dark Matter and the time period before the Big Bang. Although the discussion right now is mainly theoretical, the search for dark matter will be fascinating in the coming times.
Journal: Physical Review Letters