Vacuum energy density and gravitational entropy

The failure to calculate the vacuum energy is a central problem in theoretical physics. Presumably arises from insistent use of effective field theory reasoning context that well beyond its intended scope. If one follows this path, led inevitably statistical or anthropic for observations. It appears more palatable resolution requires some form UV/IR feedback. In paper we take point view such feedback can be thought as arising by defining notion quantum space-time. We reformulate regularized computation way it interpreted terms sum over elementary phase space volumes, identify with ground state degeneracy. This observation yields precise feedback, while leaving scale unfixed. Here argue holography provide key piece information: show equating microscopic degeneracy macroscopic gravitational entropy prediction easily consistent Essentially, smallness tied large size Universe. discuss how within scenario notions go so wrong.