Key points are not available for this paper at this time.
We consider a model of non-local gravity with a large bare cosmological constant, Λ, and study its cosmological solutions. The model is characterized by a function f(ψ) = f 0 e αψ , where ψ = □ -1 R and α is a real dimensionless parameter. In the absence of matter, we find an expanding universe solution a ∝ t n with n α cr ≈ 0.17. This is quite a weak condition. We argue that the solution is stable against the inclusion of matter fields. Thus our solution opens up new possibilities for solution to the cosmological constant problem.
Zhang et al. (Wed,) studied this question.