Brans-Dicke theory of gravity with torsion: A possible solution of ω-problem

被引：3
|
作者：
Wu, Yu-Huei [1 ,2 ]
Wang, Chih-Hung [2 ]
机构：
[1] Natl Cent Univ, Ctr Math & Theoret Phys, Chungli 320, Taiwan
[2] Natl Cent Univ, Dept Phys, Chungli 320, Taiwan
来源：
PHYSICAL REVIEW D | 2012年 / 86卷 / 12期
关键词：
GENERAL-RELATIVITY; FALSE VACUUM; UNIVERSE; FATE;
D O I：
10.1103/PhysRevD.86.123519
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the Brans-Dicke theory of gravity in Riemann-Cartan space-times and obtain general torsion solutions, which are completely determined by the Brans-Dicke scalar field Phi, in the false- vacuum-energy- dominated epoch. The substitution of the torsion solutions back to our action gives the original Brans-Dicke action with Phi-dependent Brans-Dicke parameter omega(Phi). The evolution of omega(Phi) during the inflation is studied and it is found that omega approaches infinity at the end of inflation. This may solve the omega-problem in the extended inflation model. DOI: 10.1103/PhysRevD.86.123519
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页数：6
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