Two-dimensional dS/CFT correspondence -: art. no. 065008

被引：12
|
作者：
Cadoni, M
Carta, P
Cavaglià, M
Mignemi, S
机构：
[1] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy
[2] Ist Nazl Fis Nucl, Sez Cagliari, I-09042 Monserrato, Italy
[3] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
[4] Ist Nazl Fis Nucl, Sede Presidenza, I-00185 Rome, Italy
[5] Univ Cagliari, Dipartimento Matemat, I-09123 Cagliari, Italy
来源：
PHYSICAL REVIEW D | 2002年 / 66卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.66.065008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
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页数：10
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