Speaker
Alexander Ganz
(ITP Hannover)
Description
Minimally modified gravity models are a class of modified gravity theories with only two local degrees of freedom as in General Relativity. I want to discuss the implications on the early Universe.
As long as the non-dynamical scalar field is sub-dominant at the background one recovers the standard results for slow-roll inflation both for the power and biscpectrum. Otherwise, it is possible to construct viable models enhancing the local non-Gaussianities and violating Maldacena's consistency relation.
Last, I discuss that the bispectrum can be crucial to test bouncing scenarios, which have been proposed in this class of models.
Author
Alexander Ganz
(ITP Hannover)
