For a long time now researchers have believed that when a
black hole dies, everything inside is completely gone forever. But a recent
study proposes that information and everything else sucked into the event
horizon isn't actually wiped out - but gradually leaks out throughout the later
stages of the black hole's evaporation.

Scientists united Hawking radiation with mathematical models
and high-performance computers to generate a simulation displaying when
information goes in and leaves a black hole.

The new study was published in the journal APS Physics few
days ago. It was Stephen Hawking, some forty years ago, who proposed that black
holes evaporate and shrink because they emit radiation. After that several
question arose about the information and everything else inside the black hole
– specifically where this all information goes when the black hole dies.

After many calculations, physicists suggested everything simply
vanishes inside the black holes but this violates the very essential laws of
physics.

Chris Adami and his colleague Kamil Bradler, University of
Ottawa, have developed a new theory according to which information contained
slowly leaks out while the black hole is evaporating.

This study counteracts a pretty old concept that it was
impossible for all quantum information to stay secret inside the black hole
even though it shrunk to minute sizes – meaning everything present inside the
black hole would be destroyed.

So Chris Adami and his colleague Kamil Bradler just used
Hawking's theory 'with a little twist'.

By means of mathematical tools and high-performance computers,
scientists were able to simulated black holes over long periods of time and
trace information outside the holes. Adami said:

“To perform this calculation, we had to guess how a black hole
interacts with the Hawking radiation field that surrounds it. This is because
there currently is no theory of quantum gravity that could suggest such an
interaction. However, it appears we made a well-educated guess because our
model is equivalent to Hawking's theory in the limit of fixed, unchanging black
holes. While our model is just that—a model—we were able to show that any
quantum interaction between black holes and Hawking radiation is very likely to
have the same properties as our model”.

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