| Cosmological evolution of a tachyon-quintom model of dark energy | |
| Shi, Shang-Gang1; Piao, Yun-Song1; Qiao, Cong-Feng1,2 | |
| 刊名 | Journal of cosmology and astroparticle physics
 |
| 2009-04-01 | |
| 期号 | 4页码:19 |
| 关键词 | Dark energy theory Dark energy experiments |
| ISSN号 | 1475-7516 |
| DOI | 10.1088/1475-7516/2009/04/027 |
| 通讯作者 | Shi, shang-gang(shishanggang06@mails.gucas.ac.cn) |
| 英文摘要 | In this work we study the cosmological evolution of a dark energy model with two scalar fields, i.e. the tachyon and the phantom tachyon. this model enables the equation of state omega to change from w > -1 to omega < -1 in the evolution of the universe. the phase-space analysis for such a system with inverse square potentials shows that there exists a unique stable critical point, which has power-law solution. in this paper, we also study another form of tachyon-quintom model with two fields, which involves the interactions between both fields. |
| WOS关键词 | EQUATION-OF-STATE ; EXPONENTIAL POTENTIALS ; SCALING SOLUTIONS ; ROLLING TACHYON ; PHANTOM DIVIDE ; CONSTRAINTS ; INFLATION ; CONSTANT ; SUPERNOVAE ; UNIVERSE |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000265972600006 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2175924 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Shi, Shang-Gang |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Theoret Phys Ctr Sci Facil TPCSF, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Shang-Gang,Piao, Yun-Song,Qiao, Cong-Feng. Cosmological evolution of a tachyon-quintom model of dark energy[J]. Journal of cosmology and astroparticle physics,2009(4):19. |
| APA | Shi, Shang-Gang,Piao, Yun-Song,&Qiao, Cong-Feng.(2009).Cosmological evolution of a tachyon-quintom model of dark energy.Journal of cosmology and astroparticle physics(4),19. |
| MLA | Shi, Shang-Gang,et al."Cosmological evolution of a tachyon-quintom model of dark energy".Journal of cosmology and astroparticle physics .4(2009):19. |
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