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 the anti–de Sitter/conformal field theory duality. The 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 the 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 a positive dimension.
M. Cadoni et al., "Two-Dimensional dS/CFT Correspondence," Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 66, no. 6, American Physical Society (APS), Sep 2002.
The definitive version is available at https://doi.org/10.1103/PhysRevD.66.065008
Keywords and Phrases
Article; Calculation; Cosmos; Entropy; Gravity; Mathematical analysis; Space; Theory; Time
International Standard Serial Number (ISSN)
Article - Journal
© 2002 American Physical Society (APS), All rights reserved.
01 Sep 2002