by
Francois Englert(Université Libre de Bruxelles)
→
Europe/Zurich
TH Theory Conference Room (CERN)
TH Theory Conference Room
CERN
Description
Since the theoretical discovery of black hole evaporation through Hawking radiation the question of the unitarity of its evolution has been a major challenge to quantum physics. In conventional relativistic field theory, the S-matrix describing elementary particle interactions is evaluated in a flat background. If coupling to gravity is included, distinct S-matrix elements may require distinct backgrounds. I will show how this effect allows for a possible solution of the unitarity issue preserving the essential features of the Hawking radiation.
