Talk detail

Participant	Raffaelli, Bernard
Institution	University of Nice - 28, avenue Valrose - NICE - Alpes-Maritimes - France

Session	BH3	Accepted	Yes	Order	5	Time	10'
Talk	Oral abstract	Title	High Energy Black Hole Physics: a complex angular momentum approach
Co-authors
Abstract	In physics, it is well-known that in order to obtain information on interactions between fundamental particles, atoms, molecules, etc…, and on the structure of composite objects, we have to make collision experiments or, more precisely, scattering experiments. This is exactly the aim of this talk. Indeed, studying how black holes can interact with their environment should allow us to obtain fundamental information about them. As an example, we will mainly focus on resonance and absorption phenomena of a scalar field by the Schwarzschild black hole. The originality of this study is about the use of a semiclassical method known as the “complex angular momentum theory”, which brings concepts like S-matrix and Regge poles techniques into high energy black holes physics. It allows us to understand quasinormal modes and related topics in terms of surface waves trapped near the photons/gravitons sphere.