## Nonlocal Gravitational Models and Exact Solutions    [PDF]

Sergey Yu. Vernov
A nonlocal gravity model with a function \$f(\Box^{-1} R)\$, where \$\Box\$ is the d'Alembert operator, is considered. The algorithm, allowing to reconstruct \$f(\Box^{-1} R)\$, corresponding to the given Hubble parameter and the state parameter of the matter, is proposed. Using this algorithm, we find the functions \$f(\Box^{-1} R)\$, corresponding to de Sitter solutions.
View original: http://arxiv.org/abs/1202.1172