Inflationary attractor from tachyonic matter

被引：75
作者：
Guo, ZK
Piao, YS
Cai, RG
Zhang, YZ
机构：
[1] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
[2] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW D | 2003年 / 68卷 / 04期
关键词：
D O I：
10.1103/PhysRevD.68.043508
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the complete evolution of a flat and homogeneous universe dominated by tachyonic matter. We demonstrate the attractor behavior of tachyonic inflation using the Hamilton-Jacobi formalism. We also obtain analytical approximations for the trajectories of the tachyon field in different regions. The numerical calculation shows that an initial nonvanishing momentum does not prevent the onset of inflation. The slow-rolling solution is an attractor.
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页数：4
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