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Physicists worked on a laboratory experiment on black holes. Experience has confirmed that the predictions of the late Stephen Haking regarding black holes were correct. The black hole created by the team in their laboratory is not the same as that observed in space.
Black holes in space have such gravity that light can not escape. The black hole made in the laboratory was built with Bose-Einstein condensate and its point of no return does not prevent the light from escaping, but rather the sound of escaping.
The theory of Hawking that the team claims to be confirmed by his experience is called Hawking radiation. The team said that when it tried to enforce the laws governing heat in black holes, the black hole had to emit radiation from its surface. The challenge is that astronomers can not see a black hole close enough to prove or disprove the theory. This impossibility has led scientists to create analogs of black holes in laboratories.
This was done by trapping 8,000 rubidium atoms in a focused laser beam to create an elongated Bose-Einstein condensate. It is a system of ultra-cold atoms where strange quantum physical phenomena are visible on a large scale and are often used for this type of experiment. A second laser increases the potential energy of one side of the condensate. A clear transition separates the densest zone, considered to be the outside of the black hole, and the less dense zone, the interior of the black hole.
In one area of the experiment, the sound is faster than the speed of circulation of the rubidium atoms, but in the other, the speed of the sound is slower, allowing the sound waves of Only move away from the transition. This is how the light behaves in a black hole. The team discovered that within the event horizon of their black hole created in the laboratory, the Hawking radiation signal was a correlation between sound waves both at outside and inside their black hole. One of the researchers said he could see, Hawking was right.
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