Two-dimensional dS/CFT correspondence

Details Two-dimensional dS/CFT correspondence Two-dimensional dS/CFT correspondence

2002-05-21

arxiv.org/abs/hep-th/0205211v1

Phys.Rev. D66 (2002) 065008

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, Latex file

Scientific paper

10.1103/PhysRevD.66.065008

We investigate de Sitter/conformal field theory (dS/CFT) correspondence in two dimensions. We define the conserved mass of de Sitter spacetime and formulate the correspondence along the lines of anti-de Sitter/conformal field theory duality. Asymptotic symmetry group, mass, and central charge of de Sitter spacetime are equal to those of anti-de Sitter spacetime. The entropy of two-dimensional de Sitter spacetime is evaluated by applying Cardy formula. We calculate the boundary correlators induced by the propagation of the dilaton in two-dimensional de Sitter space. Although the dilaton is a tachyonic perturbation in the bulk, boundary conformal correlators have positive dimension.

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