If a black hole is hot, what are its elementary vibrating “atoms”? Loop theory offers a precise answer to this question. The elementary “atoms” of a black hole which vibrate and are responsible for its temperature, are precisely the individual loops sitting on the surface of the black hole. Using this theory one has been able to understand the result of Hawking in terms of the microscopic “vibrations” of the loops, and to calculate explicitly the temperature predicted by Hawking.
