Junior speaker at 14e rencontres GDR quantique

Résumé

Scattering of Dirac fields near an extremal Kerr-de Sitter black hole : A black hole is said to be extremal when two or more of its horizons coincide. After making sense of this statement in the Kerr-de Sitter family, which constitutes an analytical model for a rotating black hole in a universe with positive cosmological constant, we shall discuss the scattering of massive Dirac fields on an appropriate region of the spacetime. Our focus will be on the difficulties encountered due to the cumulated effects of the rotation, the cosmological constant and the « double » black hole horizon, as well as their resolution, in the construction of an analytical scattering theory.