Solution of the cosmological constant problem within holographic
  cosmology
  Within the holographic cosmology paradigm, specifically the model of McFadden
and Skenderis, but more generally than that, the cosmological constant is found
to naturally flow from a large value, to a small value, which can even be as
low as the needed $\sim 10^{-120}$ times the original, along with the dual RG
flow. Within this context then, the cosmological constant problem is mapped to
a simple quantum field theory property, even though the exact mechanism for it
in gravity is still obscure. I consider several examples of gravity duals to
explain the mechanism.
