2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/186826A string field theory(SFT) nonlocal model of the cosmological dark energy providing w<-1 is briefly surveyed. We summarize recent developments and open problems, as well as point out some theoretical issues related with others applications of the SFT nonlocal models in cosmology, in particular, in inflation and cosmological singularity.Talk at PASCOS 2007, to appear in the proceedings, 5 pages, latexHigh Energy Physics - Theorytext