Stephen Hawking was British a theoretical physicist and one of the most well-known scientists at all. He has contributed significantly to various fields of cosmology and quantum gravity, and in the years 1979 to 2009 he held the post of Luksian professor of mathematics at Cambridge University. The final scientific study of the scientific study was issued, one of the central themes of his 56 career. The work was completed in March just before his death.

Stephen Hawking and his final work

The final work deals with the question of whether black holes store information about things that fall into them. Some scientists believe that this information was destroyed, but others said it would violate the laws of quantum mechanics. These laws explain that everything in our world could be divided into information, for example as a chain of ones and zeros. This information should never completely disappear, even if it gets into a black hole. But Hawking, building his idea of ​​Albert Einstein's work, showed that black holes have a temperature. And because hot objects lose heat into space, black holes must eventually evaporate - they disappear and do not exist. The black holes themselves are regions in space where gravity is so strong that nothing they pull together can escape.

One of the authors of the Malcolm Perry study from the University of Cambridge said:

"Hawking has found that there seems to be even greater uncertainty in black hole physics than in quantum mechanics. Black holes are real physical objects and are at the centers of many galaxies. If an object has a temperature, it will also have a property known as entropy. "

Malcolm Perry says he spoke to Hawking about the article shortly before he died. He did not know the professor was sick.

"It was very difficult for Stephen to communicate. I was connected to a speaker to explain where we got to. When I explained it to him, he put on a huge smile, "Professor Perry explained.

Black hole Entropy

The new article shows mathematically that the entropy of a black hole can be detected by particles of light (photons) that surround the event horizon of a black hole. The event horizon is a boundary or point without return, where escape from the gravitational pull of a black hole is impossible - including light. The patina of light around the black hole was called "soft hair."

Professor Perry adds:

"This shows that 'soft hair' can represent entropy. But we don't know if Hawking's entropy is really responsible for anything that could probably be thrown into black holes. So it's really just a small step on the way so far. "

Hawking's most important discoveries

• With a mathematician from Oxford Roger Penros, he showed that if the Big Bang had occurred, start from an infinitely small point - singularity
• Black holes radiate energy known as Hawking radiation and gradually lose weight. It is caused by quantum effects near the edge of a black hole, which is an area called the event horizon
• He predicted the existence of mini-black holes at the time of the Big Bang. These tiny black holes would be incredibly hot, losing mass until it disappears - potentially ending its lives in a massive explosion.
• In the seventies, Hawking considered whether the particles and light entering the black hole were destroyed if the black hole evaporated. Hawking initially thought this "information" was from the universe lost. But American physicist Leonard Susskind disagreed. These thoughts have become known as the information paradox. In 2004, Hawking admitted that the information must be preserved.
• With physicist James Hartle, he tried to describe the history of the universe in one mathematical expression. But quantum theory shows that the differences between space and time are unclear. As a result, the proposal showed that there is little information about what happened before the Big Bang.

Hawking's radiation

Now, Professor Perry and the remaining authors have to find out how information associated with black hole entropy is physically stored in "soft hair". Also, as this information comes out of the black hole when it evaporates. The research is based on earlier work published in 2015, which suggests that information might not have gotten into a black hole but was kept at its limit.

Professor Marika Taylor, theoretical physicist at the University of Southampton, said:

"Authors need to make a few non-trivial assumptions, so the next steps will be to show whether these assumptions are valid."

Previously, Professor Hawking suggested that photons could be emitted from black holes through quantum fluctuations, a concept known as Hawking radiation. Information from the black hole could escape this way, but it could have been in a chaotic, useless form.

This document shows the life of this amazing scientist: