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02/11/2015, 16:30 — 17:30 — Sala P3.10, Pavilhão de Matemática
Dieter Lüst, Ludwig-Maximilians-Universität München

Large $N$ Graviton Scattering and Black Hole Production

In this talk I describe scattering processes of gravitons in quantum gravity, both form the field theory and also from the string theory point of view. We will define a particular kinematical regime, where the energies of the two incoming gravitons are Trans-Planckian, and where at the same time the number $N$ of gravitons in the final state is very large. As we will argue, these $2$ to $N$ scattering amplitudes support the the idea that a black hole is produced, which is a bound state of $N$ gravitons in a quantum critical state. We will also argue that this picture has to be refined at extremely large energies, where an interesting transition from field theory to string theory takes place.


Organizadores correntes: Gabriel Lopes Cardoso, Suresh Nampuri.

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