Description
In this talk, I will discuss the consistency of a large class of theories for dark energy
and primordial inflation from a fundamental point of view. In particular, focusing on
the effective theory of a single scalar field exhibiting non—linear derivative
interactions, I will discuss the ultraviolet properties of the theory at the 1—loop level
and beyond, and argue about the significance of understanding the initial conditions
and consistency of phenomenologically succesfull theories at sufficiently high
energies.