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

Crisostomi: Higher Order Scalar-Tensor Theories

Sep 27, 2017, 10:05 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


Scalar-tensor theories of gravity play an essential role for building models of inflation and dark energy. For a very long time the focus has been placed on those theories leading to second order field equations, believing all the others plagued by instabilities. In this talk I will present new degenerate theories that, despite higher order in the equations of motion, are free from such a kind of pathology. Moreover, I will show that some higher order scalar-tensor theories are a useful tool to study parity violating effects in the gravity sector.

Presentation materials