The existence of Godel, Einstein, and de Sitter universes

被引：108

作者：

Clifton, T ^{[1
]}

Barrow, JD ^{[1
]}

机构：

[1] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.72.123003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We determine the general conditions for the existence of Godel, Einstein static, and de Sitter universes in gravity theories derived from a Lagrangian that is an arbitrary function of the scalar curvature and Ricci and Riemann curvature invariants. Explicit expressions for the solutions are found in terms of the parameters defining the Lagrangian. We also determine the conditions on the Lagrangian of the theory under which time-travel is allowed in the Godel universes.

引用

页数：6

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