The physicists, led by Dr. Ahmed Almheiri, used a new theoretical model to show that information can escape from black holes in the form of "quantum hair." Quantum hair is a hypothetical type of radiation that is emitted by black holes and contains information about the matter that has fallen into them.
The model developed by Almheiri and his colleagues is based on the idea that black holes are not completely empty, but instead contain a "fuzzball" of quantum particles. These particles are constantly interacting with each other, and this interaction creates quantum hair.
The quantum hair is able to escape from black holes because it is not subject to the same laws of physics as matter. This means that it can travel through the event horizon of a black hole and escape into the outside universe.
The findings of Almheiri and his colleagues have important implications for our understanding of black holes and the nature of information. They provide a possible solution to the black hole information paradox, and they suggest that black holes may not be as mysterious as we once thought.