COLÓQUIO DO DEPARTAMENTO DE FÍSICA MATEMÁTICA
Dia 10/12/2014 (quarta-feira) - 16h - Sala Jayme Tiomno
"Hadamard state in Schwarzschild-de Sitter spacetime"
Dr. Marcos Brum de Oliveira (UFRJ)
We construct a state in the Schwarzschild-de Sitter spacetime whch is invariant under the action of its group of symmetries. Our state is not defined in the whole Kruskal extension of this spacetime, but rather in a subset of the maximally extended conformal diagram. The construction is based on a careful use of the bulk-to-boundary technique. We will show that our state is Hadamard and that it is not a KMS state, differently from the case of states contructed in spacetimes containing only one event horizon (based on arXiv:1405.7916 - accepted for publication in CQG, in collaboration with Sergio Jorás).
