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September 11, 2017 to October 6, 2017
Institut de Physique Théorique, CEA Saclay
Europe/Paris timezone
Please register for the program DarkMod

Bellini: "Towards a unified description of theories with a single scalar degree of freedom"

Sep 25, 2017, 11:10 AM
Institut de Physique Théorique, CEA Saclay

Institut de Physique Théorique, CEA Saclay

Orme des Merisiers batiment 774 Point courrier 136 CEA/DSM/IPhT, CEA/Saclay F-91191 Gif-sur-Yvette Cedex FRANCE


Models propagating a single extra degree of freedom are very popular as Dark Energy candidates. Examples are Scalar-Tensor, Vector-Tensor, and bimetric theories of gravity. Despite their common properties, these theories are usually described in different frameworks. I will show a  method to construct general parametrizations to describe the linear dynamics of all these models. I will present the results in a unified formalism, and discuss under what circumstances it is possible to have a unified description for all these theories.

Presentation materials