An Etude on Global Vacuum Energy Sequester

Understand

Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections.

• The original proposal was based on using global Lagrange multipliers, but later a local formulation was provided.
• Subsequently other interesting claims of a different non-local approach to the cosmological constant problem were made, based again on global Lagrange multipliers.
• We examine some of these proposals and find their mutual relationship.