Higher-order gravity and the cosmological background of gravitational waves

被引：49
|
作者：
Capozziello, Salvatore [1 ,2 ]
De laurentis, Mariafelicia [3 ,4 ]
Francaviglia, Mauro [5 ,6 ]
机构：
[1] Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy
[2] Univ Monte S Angelo, Ist Nazl Fis Nucl, Sez Napoli Compl, I-80126 Naples, Italy
[3] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy
[4] Ist Nazl Fis Nucl, Sez Torino, I-10129 Turin, Italy
[5] Univ Turin, Dipartimento Matemat, I-10123 Turin, Italy
[6] Ist Nazl Fis Nucl, Sez Torino, I-10123 Turin, Italy
来源：
ASTROPARTICLE PHYSICS | 2008年 / 29卷 / 02期
关键词：
extended theories of gravity; gravitational waves; cosmology;
D O I：
10.1016/j.astropartphys.2007.12.001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The cosmological background of gravitational waves can be tuned by the higher-order corrections to the gravitational Lagrangian. In particular, it can be shown that assuming R1+epsilon, where epsilon indicates a generic (eventually small) correction to the Hilbert-Einstein action in the Ricci scalar R, gives a parametric approach to control the evolution and the production mechanism of gravitational waves in the early Universe. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：125 / 129
页数：5
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