On de Sitter Geometry in Cosmic Void Statistics
On de Sitter Geometry in Cosmic Void Statistics
复制标题
论宇宙空洞统计中的德西特几何
DOI:
10.1093/mnras/stt2298
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发表时间:
2014
影响因子:
4.8
通讯作者:
鄭昇明
中科院分区:
文献类型:
--
作者:
Gibbons;G. W.;Werner;M. C.;吉田直紀;鄭昇明
Starting from the geometrical concept of a four-dimensional de Sitter configuration of spheres in Euclidean 3-space and modelling voids in the Universe as spheres, we show that a uniform distribution over this configuration space implies a power law for the void number density which is consistent with results from the excursion set formalism and with data, for an intermediate range of void volumes. The scaling dimension of the large-scale structure can be estimated as well. We also discuss the effect of restricting the survey geometry on the void statistics. This work is a new application of de Sitter geometry to cosmology and also provides a new geometrical perspective on self-similarity in cosmology.