Speaker
Gizem Sengor
(Bogazici University)
Description
In quantum field theory on flat spacetime, analysis of the representations of the isometry group of spacetime with a vanishing cosmological constant has led to our current understanding of particle physics. In this talk we would like to discuss what can be learned about particles of a spacetime in the presence of a positive cosmological constant by studying the representations of the isometry group of de Sitter. We make use of the late-time behaviour of free scalar fields to address features of different categories of representations of the de Sitter group with focus on normalized single particle states.
Author
Gizem Sengor
(Bogazici University)
