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

Generalized Einstein-Aether as a dark energy fluid

25 Apr 2017, 17:40
15m
Chambre du Trésorier (Palais des Papes, Avignon)

Chambre du Trésorier

Palais des Papes, Avignon

Speaker

Mr Damien Trinh (University of Manchester)

Description

In an attempt to explain dark energy numerous models and modified gravity theories have been constructed in order to better describe current cosmological observations. An obvious way to modify gravity is to introduce a new field other than the metric and make dark energy a dynamical component. In this talk I will present Generalized Einstein-Aether, a vector-tensor theory of gravity where the vector field is constrained to be of time-like unit norm, and discuss its dynamics at the level of background cosmology and linear perturbations. Using this as an example I will also discuss the Equation of State approach to parameterizing perturbations and how it applies to other general models.

Primary author

Mr Damien Trinh (University of Manchester)

Presentation Materials