Inflationary Phase in a Generalized Brans-Dicke Theory

被引：4
|
作者：
Berman, Marcelo S. [1 ]
Trevisan, Luis A. [2 ]
机构：
[1] Inst Albert Einstein Latinamer, BR-80730440 Curitiba, PR, Brazil
[2] Univ Estadual Ponta Grossa, BR-84010330 Ponta Grossa, PR, Brazil
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2009年 / 48卷 / 07期
关键词：
Inflation; Brans-Dicke; Scalar-tensor; Cosmology; Coupling "constant; Cosmological "constant;
D O I：
10.1007/s10773-009-9965-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We find a solution for exponential inflation in a Brans-Dicke generalized model, where the coupling "constant" is variable. While in General Relativity the equation of state is p=-rho, here we find p=alpha rho, where alpha <-2/3. The negativity of cosmic pressure implies acceleration of the expansion, even with I >< 0.
引用
收藏
页码：1929 / 1932
页数：4
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