de Sitter attractors in generalized gravity

被引：58

作者：

Faraoni, V

机构：

[1] Univ No British Columbia, Dept Phys, Prince George, BC V2N 4Z9, Canada

[2] Bishops Univ, Dept Phys, Lennoxville, PQ J1M 1Z7, Canada

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 04期

关键词：

D O I：

10.1103/PhysRevD.70.044037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We obtain conditions for the existence and stability of de Sitter attractors in the phase space of homogeneous and isotropic cosmology in generalized theories of gravity (including nonlinear and scalar-tensor theories). These conditions are valid for any form of the coupling functions of the theory. Stability with respect to inhomogeneous perturbations is analyzed using a covariant and gauge-invariant formalism. The relevance for inflationary scenarios of the early universe and for quintessence models of the present era is discussed.

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页数：16

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