On Beltrami model of de Sitter spacetime
On Beltrami model of de Sitter spacetime
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DOI：
10.1142/s0217732304014033
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发表时间：
2003-11
影响因子：
1.4
通讯作者：
Han-Ying Guo;Chao Huang;Zhan Xu;Bin Zhou
中科院分区：
文献类型：
--
作者：
Han-Ying Guo;Chao Huang;Zhan Xu;Bin Zhou
基于DS空间的一些重要性质，我们提出了一个Beltrami模型BA，它可以解释DS空间的可见之谜以及狭义相对论原理和宇宙学原理之间的悖论。在BA中，有惯性类型的坐标和惯性类型的观测者。因此，可以为测试粒子和光信号定义经典的可观测性。此外，通过选择同时性的定义，Beltrami度量被转换为Robertson-Walker-like度量。它具有A阶的正空间曲率，这已被来自WMAP的CMB功率谱所显示，并应得到其大尺度数据的进一步证实。
Based on some important properties of dS space, we present a Beltrami model BA that may shed light on the observable puzzle of dS space and the paradox between the special relativity principle and cosmological principle. In BA, there are inertial-type coordinates and inertial-type observers. Thus, the classical observables can be defined for test particles and light signals. In addition, by choosing the definition of simultaneity the Beltrami metric is transformed to the Robertson-Walker-like metric. It is of positive spatial curvature of order A. This has already been shown by the CMB power spectrum from WMAP and should be further confirmed by its data in large scale.