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)
