Timelike vector field dynamics in the early universe | |
Koh, S ; Hu, B | |
刊名 | JOURNAL OF THE KOREAN PHYSICAL SOCIETY
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2012 | |
卷号 | 60期号:11页码:1983-1992 |
关键词 | MICROWAVE SUPERNOVAE |
ISSN号 | 0374-4884 |
通讯作者 | Koh, S (reprint author), Jeju Natl Univ, Dept Sci Educ, Cheju 690756, South Korea. |
英文摘要 | We study the dynamics of a timelike vector field when the background spacetime is in an accelerating phase in the early universe. With a timelike vector field, an inflationary phase is shown to be difficult to realize, so we investigate the evolution of a vector field within a scalar field-driven inflation model. Also, we calculate the power spectrum of the vector field without considering the metric perturbations. While the time component of the vector field perturbations provides a scale invariant spectrum when zeta = 0, where zeta is a nonminimal coupling parameter, both the longitudinal and the transverse perturbations give a scale invariant spectrum when zeta = 1/6 in the absence of the coupling terms. The deviation of the power spectrum due to the coupling terms is calculated by use of the Greens' function. |
学科主题 | Physics |
收录类别 | SCI |
资助信息 | National Research Foundation of Korea (NRF); Ministry of Education, Science and Technology [2011-0025976]; Chinese Academy of Sciences [KJCX3-SYW-N2]; NSFC [10821504, 10525060] |
原文出处 | http://dx.doi.org/10.3938/jkps.60.1983 |
语种 | 英语 |
WOS记录号 | WOS:000305223000029 |
公开日期 | 2014-04-25 |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/15089] ![]() |
专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
推荐引用方式 GB/T 7714 | Koh, S,Hu, B. Timelike vector field dynamics in the early universe[J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY,2012,60(11):1983-1992. |
APA | Koh, S,&Hu, B.(2012).Timelike vector field dynamics in the early universe.JOURNAL OF THE KOREAN PHYSICAL SOCIETY,60(11),1983-1992. |
MLA | Koh, S,et al."Timelike vector field dynamics in the early universe".JOURNAL OF THE KOREAN PHYSICAL SOCIETY 60.11(2012):1983-1992. |
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