Effects of cosmological constant on motion of UHECR particles
文献类型：期刊论文
| 作者 | Chen, SX; Chang Z(常哲) ; Chang, Z
|
| 刊名 | SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2005 |
| 卷号 | 48期号:1页码:#REF! |
| 关键词 | ultrahigh energy cosmic ray cosmological constant curved spacetime |
| 通讯作者 | Chen, SX (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China. |
| 英文摘要 | Recent astronomical observations manifest that about two-thirds of the whole energy in the Universe is contributed by a small positive cosmological constant Lambda (> 0). Then, an asymptotically de Sitter spacetime is premised naturally. However, physics in the de Sitter spacetime is very different from that in the Minkowski spacetime. As the first step, a covariant formalism of the kinematics in the de Sitter spacetime is presented here. By solving exactly the equations of motion for a field, we obtain the dispersion relation of a free particle. It is noticed that the dispersion relation is dependent on the degree of freedom of angular momentum of the particle. We show the threshold anomaly of the ultra high energy cosmic ray disappears naturally in the framework of the de Sitter kinematics. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| WOS记录号 | WOS:000228224000005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225705]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Chen, SX,Chang Z,Chang, Z. Effects of cosmological constant on motion of UHECR particles[J]. SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,2005,48(1):#REF!. |
| APA | Chen, SX,常哲,&Chang, Z.(2005).Effects of cosmological constant on motion of UHECR particles.SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,48(1),#REF!. |
| MLA | Chen, SX,et al."Effects of cosmological constant on motion of UHECR particles".SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY 48.1(2005):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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