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arXiv 0904.0975astro-ph.CO
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作为空间连续性条件的暗能量

Dark energy as a spatial continuity condition

Boudewijn F. Roukema, Vincent Blanloeil

摘要:

观测证据表明,暗能量使宇宙在目前的时代几乎是平的。我们研究空间连续性和暗能量之间的联系。我们假设共动空间是一个常曲率的紧致3-流形,由齐次Friedman-Lemaitre-Robertson-Walker度量描述。我们假设空间连续性不能被破坏,也就是说,在后量子时代,宇宙共动部分的全局拓扑结构不能改变。我们发现,如果宇宙在早期是平坦和紧凑的,那么目前较低的辐射和物质密度值意味着暗能量是作为空间连续性效应而产生的。此外,如果宇宙是紧凑的,那么Omega_tot=1是动态稳定的,其中Omega_tot是临界密度单位的总密度参数。暗能量被观测到是一种几何现象。对于暗能量,很难想象比空间连续性、有限性和均匀性更简单的解释。

英文摘要:

Observational evidence of dark energy that makes the Universe nearly flat at the present epoch is very strong. We study the link between spatial continuity and dark energy. We assume that comoving space is a compact 3-manifold of constant curvature, described by a homogeneous Friedman-Lemaitre-Robertson-Walker metric. We assume that spatial continuity cannot be violated, i.e. that the global topology of the comoving section of the Universe cannot change during post-quantum epochs. We find that if the Universe was flat and compact during early epochs, then the presently low values of the radiation and matter densities imply that dark energy was created as a spatial continuity effect. Moreover, if the Universe is compact, then Omega_tot=1 is dynamically stable, where Omega_tot is the total density parameter in units of the critical density. Dark energy was observationally detected as a geometrical phenomenon. It is difficult to imagine a simpler explanation for dark energy than spatial continuity, finiteness and homogeneity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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