Did the Big Bang happen or has the universe been around forever?


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Created: Tuesday, February 10, 2015 07:06 pm PST by homer2000.
Last Modified: Tuesday, February 10, 2015 07:10 pm PST.
Debate views: 1,343

Debate Summary

The universe may have existed forever, according to a new model that applies quantum correction terms to complement Einstein's theory of general relativity. The model may also account for dark matter and dark energy, resolving multiple problems at once.

Read more at: http://phys.org/news/2015-02-big-quantum-equation-universe.html#jCp

Are you seeing the stories this week suggesting that the Big Bang didn’t happen? According to astrophysicist Brian Koberlein – a great science communicator at Rochester Institute of Technology with a popular page on G+ – that’s not quite what the new research (published in early February 2015 Physics Letters B, has suggested. The new study isn’t suggesting there was no Big Bang, Koberlein says. It’s suggesting that the Big Bang did not start with a singularity – a point in space-time when matter is infinitely dense, as at the center of a black hole. How can this be? Koberlein explains on his website:
https://briankoberlein.com/2015/02/10/beginning/

The new model – in which our universe has no beginning and no end – comes from Ahmed Farag Ali at Benha University in Egypt and coauthor Saurya Das at the University of Lethbridge in Alberta, Canada. Their paper looks at a result derived from Einstein’s theory of general relativity known as the Raychaudhuri equation. Koberlein says:

"Basically his equation describes how a volume of matter changes over time, so its a great way of finding where physical singularities exist in your model. But rather than using the classical Raychaudhuri equation, the authors use a variation with a few quantum tweaks. This approach is often called semi-classical … "

Did the Big Bang happen or has the universe been around forever?


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It happened
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Cabbage (Con)
It's been around forever
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