Anisotropic power-law inflation for the Dirac-Born-Infeld theory

被引:46
作者
Do, Tuan Q. [1 ]
Kao, W. F. [1 ]
机构
[1] Chiao Tung Univ, Inst Phys, Hsinchu, Taiwan
关键词
COSMOLOGICAL MODELS; EINSTEIN SOLVMANIFOLDS; INSTABILITY; BEHAVIOR; UNIVERSE;
D O I
10.1103/PhysRevD.84.123009
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We find a new set of the Bianchi type I power-law expanding solutions in a string-motivated Dirac-Born-Infeld theory. Stability analysis shows that these power-law inflationary solutions remain stable with or without the contribution of the Dirac-Born-Infeld effect. We also find a new set of Bianchi type I expanding power-law solutions in a two scalar Dirac-Born-Infeld model with an additional phantom field. It is shown that the inclusion of the phantom field turns the Bianchi type I power-law solutions unstable during the inflationary phase.
引用
收藏
页数:15
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