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

引用

页数：6

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