Late-time acceleration by a residual cosmological constant from sequestering vacuum energy in ultimate collapsed structures

Understand

The sequestering mechanism has been proposed as a remedy to the old cosmological constant problem of the non-gravitating vacuum energy in the matter sector.

• Here it is shown that an extension of this global constraint mechanism arises naturally from an averaging condition for residual cosmological constants produced in different patches of the Universe.
• The new mechanism naturally yields the small observed value that gives rise to cosmic acceleration at late times, hence, addressing the new cosmological constant problem.
• Hereby the halo model picture is adopted with all matter content ultimately residing in the last collapsed structures formed.