The Vacuum Energy Density and Gravitational Entropy

Understand

The failure to calculate the vacuum energy is a central problem in theoretical physics.

• Presumably the problem arises from the insistent use of effective field theory reasoning in a context that is well beyond its intended scope.
• If one follows this path, one is led inevitably to statistical or anthropic reasoning for observations.
• It appears that a more palatable resolution of the vacuum energy problem requires some form of UV/IR feedback.