“As far as we can see, since different points in the universe never actually converged in the past, it did not have a beginning. It lasted forever. It will also not have an end, in other words, there is no singularity. The universe could have lasted forever. It could have gone through cycles of being small and big. or it could have been created much earlier.” – Saurya Das at the University of Lethbridge in Alberta, Canada, Co-Author of the study. (source)
Researchers believe that the universe may have existed forever, based on a new model that applies quantum correction terms to Einstein's theory of general relativity.
The general consensus about the age of the earth is about 13.8 billion years. It's propagated in the very beginning, everything actually came from one single infinite dense point. It is alleged that this point began to expand and that is where the Big Bang officially started.
The Big Bang singularity, as it is called, is a problem that arises from the fact that scientists cannot explain what happened before this supposed event took place.
"The Big Bang singularity is the most serious problem of general relativity because the laws of physics appear to break down there," Ahmed Farag Ali at Benha University and the Zewail City of Science and Technology explained to Phys.org.
However, Ali and his coworker Saurya Das from the University of Lethbridge in Canada, have published a paper in Physics Letters B that the Big Bang singularity can be resolved by a new model they have discovered.
Their work is actually based on the ideas of legendary theoretical physicist David Bohm. Starting in the 50s, David Bohm began replacing classical geodesics (the shortest path between two places on a curved surface) with quantum trajectories.
You can learn more in the video below;
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