In string theory, the de Sitter/conformal field theory correspondence, shortened to dS/CFT correspondence, is a de Sitter space analogue of the anti-de Sitter space version known as adS/CFT correspondence. The dS/CFT correspondence was proposed originally by Andrew Strominger in 2001. In this correspondence, the conjectured CFT boundary is in the future, and time is the emergent dimension.
References
External links dS/CFT correspondence at the String Theory Wiki