  The discovery of the fact that black holes radiate particles and eventually
evaporate led Hawking to pose the well-known information loss paradox. This
paradox caused a long and serious debate since it claims that the fundamental
laws of quantum mechanics may be violated. A possible cure appeared recently
from superstring theory, a consistent theory of quantum gravity: if the
holographic description of a quantum black hole based on the gauge/gravity
duality is correct, the information is not lost and quantum mechanics remains
valid. Here we test this gauge/gravity duality on a computer at the level of
quantum gravity for the first time. The black hole mass obtained by Monte Carlo
simulation of the dual gauge theory reproduces precisely the quantum gravity
effects in an evaporating black hole. This result opens up totally new
perspectives towards quantum gravity since one can simulate quantum black holes
through dual gauge theories.
