Cosmological bounce and Genesis beyond Horndeski

Understand

We study a "classical" bouncing scenario in beyond Horndeski theory.

• We give an example of spatially flat bouncing solution that is non-singular and stable throughout the whole evolution.
• The model is arranged in such a way that the scalar field driving the cosmological evolution initially behaves like full-fledged beyond Horndeski, whereas at late times it becomes a massless scalar field minimally coupled to gravity.