Ultraviolet complete dark energy model
  We consider a local phenomenological model to explain a non-local gravity
scenario which has been proposed to address dark energy issues. This non-local
gravity action has been seen to fit the data as well as $\Lambda$-CDM and
therefore demands a more fundamental local treatment. The induced gravity model
coupled with higher-derivative gravity is exploited for this proposal, as this
perturbatively renormalizable model has a well-defined ultraviolet (UV)
description where ghosts are evaded. We consider a generalised version of this
model where we consider two coupled scalar fields and their non-minimal
coupling with gravity. In this simple model, one of the scalar field acquires a
Vacuum Expectation Value (VEV), thereby inducing a mass for one of the scalar
fields and generating Newton's constant. The induced mass however is seen to be
always above the running energy scale thereby leading to its decoupling. The
residual theory after decoupling becomes a platform for driving the accelerated
expansion under certain conditions. Integrating out the residual scalar
generates a non-local gravity action. The leading term of which is the
non-local gravity action used to fit the data of dark energy.
