Knowledge Management System of Institute of Theoretical Physics, CAS
Guo, ZK ; Piao, YS; Cai, RG; Zhang, YZ; Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
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| Cosmological scaling solutions and cross-coupling exponential potential | |
| Source Publication | PHYSICS LETTERS B
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| Keyword | Inflationary Universe Scalar Fields Models Spacetimes Flatness Scenario Horizon |
| Abstract | We present a phase-space analysis of cosmology containing multiple scalar fields with a positive or negative cross-coupling exponential potential. We show that there exist power-law kinetic-potential-scaling solutions for a sufficiently flat positive potential or for a steep negative potential. The former is the unique late-time attractor, but it is difficult to yield assisted inflation. The later is never stable in an expanding universe. Moreover, for a steep negative potential there exists a kinetic-dominated regime in which each solution is a late-time attractor. In the presence of ordinary matter these scaling solutions with a negative cross-coupling potential are found unstable. We briefly discuss the physical consequences of these results. (C) 2003 Elsevier B.V. All rights reserved. |
| 2003 | |
| ISSN | 0370-2693 |
| Volume | 576Issue:40910Pages:12-17 |
| Subject Area | Physics |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/14161 |
| Collection | SCI期刊论文 |
| Corresponding Author | Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Guo, ZK,Piao, YS,Cai, RG,et al. Cosmological scaling solutions and cross-coupling exponential potential[J]. PHYSICS LETTERS B,2003,576(40910):12-17. |
| APA | Guo, ZK,Piao, YS,Cai, RG,Zhang, YZ,&Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2003).Cosmological scaling solutions and cross-coupling exponential potential.PHYSICS LETTERS B,576(40910),12-17. |
| MLA | Guo, ZK,et al."Cosmological scaling solutions and cross-coupling exponential potential".PHYSICS LETTERS B 576.40910(2003):12-17. |
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| Cosmological scaling（176KB） | 开放获取 | License | Application Full Text | |||
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