The objective of this project is to bring to a conclusion the goals that were set in the original proposal. The latter was concerned with a detailed study of the thesis that the quantum gravitational infrared back-reaction slowly generates negative vacuum energy which eventually screens a positive cosmological constant and provides a natural end to inflation in the early universe.
So far the perturbative analysis of the screening mechanism has been completed and, using it, real progress is currently being made in obtaining a model for the non-perturbative regime. Such a model will allow a straightforward computation of the relevant cosmological quantities in the early universe. Given the time constraints involved such an objective is quite reasonable.