September 11, 2017 to October 6, 2017
Institut de Physique Théorique, CEA Saclay
Europe/Paris timezone
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Cespedes: "Detecting modified gravity using B modes experiment"

Sep 25, 2017, 2:35 PM
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


In this talk We will discuss the effects that a modified sector tensor  can produce on the polarisation CMB power spectra. Alternative theories  of gravity can give the graviton a mass but also modify the dispersion  relation of the gravitational waves. by A mass for the graviton can  affect the large angular scales and in general a modified dispersion  relation could change the position of the acoustic peaks. These effect  modifies either the CMB power spectrum and bispectrum, with respect to  the canonical case. Thus given the precision of the CMB experiments, if  detected, primordial gravitational waves can help to constraint gravity  at a much higher accuracy.

Presentation materials