24-28 April 2017
Palais des Papes, Avignon
Europe/Paris timezone

Evaporation of the de Sitter horizon

27 Apr 2017, 17:15
15m
Chambre du Trésorier (Palais des Papes, Avignon)

Chambre du Trésorier

Palais des Papes, Avignon

Speaker

Tommi Markkanen

Description

The exponentially expanding de Sitter solution is frequently encountered in cosmology due to its significance for the late and early Universe. However, its stability in a quantised theory has for a long time been the source of debate. In this talk we discuss this issue in the framework of semi-classical gravity. Based on a first principle calculation, we argue that when one considers only those degrees of freedom that are accessible to a local observer, the quantum back reaction destabilizes de Sitter space leading to a gradual continuous increase of the Horizon

Primary author

Tommi Markkanen

Presentation Materials