Dark matter may have existed before the big bang, study

Testing the origin of dark matter by observing the signatures dark matter leaves on the distribution of matter in the universe.


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One of the mysteries of our universe is that of dark energy and dark matter. Scientists all over the world are attempting to discover what particles make up dark energy and matter. However, it is believed that dark matter makes up about 80% of the universe’s mass.

However, it is believed that dark matter makes up about 80% of the universe’s mass. But a new study by scientists at Johns Hopkins University, suggests that dark matter may have existed before the Big Bang.

The study also represents a new idea of how dark matter was conceived and how to distinguish it with galactic observations.

Tommi Tenkanen, a postdoctoral fellow in Physics and Astronomy at the Johns Hopkins University, said, “The study revealed a new connection between particle physics and astronomy. If dark matter consists of new particles that were born before the Big Bang, they affect the way galaxies are uniquely distributed in the sky. This connection may be used to reveal their identity and make conclusions about the times before the Big Bang too.”

Well, the origin of dark matter is still a mystery, yet astronomers have shown dark matter assumes a vital role in the formation of galaxies and galaxy clusters. Despite the fact that not legitimately observable, scientists know dark matter exists by its gravitational energy consequences for how visible matter moves and is dispersed in space.

For quite a while, scientists believed that dark matter must be an extra substance from the Big Bang. Specialists have long looked for this sort of dark matter, however, so far every trial search has been fruitless.

Tenkanen said, “If dark matter were truly a remnant of the Big Bang, then in many cases researchers should have seen a direct signal of dark matter in different particle physics experiments already.”

For this study, scientists used a simple mathematical system and suggested that the dark matter has emerged before the Big Bang. It might be formed during an era known as cosmic inflation when space was expanding very rapidly.

Tenkanen said, “With the proposed mathematical scenario, we don’t have to assume new types of interactions between visible and dark matter beyond gravity, which we already know is there.”

“While the idea that dark matter existed before the Big Bang is not new, other theorists have not been able to come up with calculations that support the idea. The new study shows that researchers have always overlooked the simplest possible mathematical scenario for dark matter’s origins.”

“While this type of dark matter is too elusive to be found in particle experiments, it can reveal its presence in astronomical observations. We will soon learn more about the origin of dark matter when the Euclid satellite is launched in 2022. It’s going to be very exciting to see what it will reveal about dark matter and if its findings can be used to peak into the times before the Big Bang.”

The study, published August 7 in Physical Review Letters.


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