Scientists have once again crossed black holes

Oct

6

2014

For a long time black holes wholly owned public imagination and have been the subject of popular culture, from TV series to Hollywood. About them virtually nothing is known, except that it is the darkest and most dense objects in the universe, which can not leave even light. One study, published recently Phys.org, further adding fuel to the fire: black holes do not exist.

By merging two seemingly contradictory theories, Laura Mersini-Houghton, a physics professor of the College of Arts and Sciences, Chapel Hill, mathematically proved that black holes could never be formed. The work will not only make scientists rethink the fabric of space-time, but also the origin of the universe.

“I’m still reeling from the shock, – says Mersini-Houghton. – We have been studying this problem for more than 50 years, and its solution gives us much food for thought. ”

For many years, believed that black holes are formed when a massive star collapses under its own gravity into a single point in space – imagine that the Earth is flattened into a ball the size of a walnut – which is called a singularity. Singularity surrounds the invisible shell, known as the event horizon, and crossing the event horizon means that nothing will ever come back. This is the point beyond which the gravitational pull of a black hole becomes so powerful that nothing can escape it, not even light.

The reason that the black hole is so strange is the fact that they faced two of the most fundamental theories of the universe. Einstein’s theory of gravity predicts the formation of black holes, but the fundamental law of quantum theory states that the universe of information can never disappear for good. Attempts to combine these two theories lead to mathematical nonsense and became known as the paradox of information loss.

In 1974, Stephen Hawking used quantum mechanics to show that black holes evaporate. Since then, scientists began to discover more and more traces in space that are consistent with this radiation, revealing more and more black holes in the universe.

Mersini-Houghton describes an entirely new script. She agrees with Hawking that when a star collapses under its own gravity, it produces Hawking radiation. But in our work Mersini-Houghton shows that radiating star also loses mass. So much so that at least reduce it did not have enough density to become a black hole.

Before you can form a black hole, a dying star swells for the last time, and then explodes. Not formed any singularity or event horizon. There is simply no such thing as a black hole.

The work, published in arXiv.org, offers accurate numerical solutions of this problem and has been done in collaboration with Harald Peiffer, an expert on numerical relativity at the University of Toronto.

The experimental data in one day may well provide physical evidence that black holes do not exist in the universe. In the meantime, Mersini-Houghton says that the mathematical part of her job is over.

Many physicists and astronomers believe that our universe emerged from a singularity, which began to expand since the Big Bang. However, if there is no singularity, physicists will have to rethink their ideas of the Big Bang .

“For many years, physicists have tried to combine the two theories – Einstein’s theory of gravitation and quantum mechanics – but this particular scenario harmoniously combines two theories together. And this is serious. ”

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