Vanishing cosmological constant in modified Gauss-Bonnet gravity with conformal anomaly

被引：15
作者：
Brevik, Iver [1 ]
Quiroga, John [1 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2007年 / 16卷 / 05期
关键词：
cosmological constant; modified gravity; Gauss-Bonnet gravity; conformal anomaly;
D O I：
10.1142/S0218271807010419
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider dark energy cosmology in a de Sitter universe filled with quantum conformal matter. Our model represents a Gauss - Bonnet model of gravity with contributions from quantum effects. To the General Relativity action an arbitrary function of the GB invariant, f(G), is added, and taking into account quantum effects from matter the cosmological constant is studied. For the considered model, the conditions for a vanishing cosmological constant are considered. Creation of a de Sitter universe by quantum effects in a GB modified gravity is discussed.
引用
收藏
页码：817 / 825
页数：9
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