Studying the decay of the vacuum energy with the observed density fluctuation spectrum

被引：41

作者：

Opher, R ^{[1
]}

Pelinson, A ^{[1
]}

机构：

[1] Univ Sao Paulo, IAG, BR-05508900 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1103/PhysRevD.70.063529

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate here models that suggest that the vacuum energy decays into cold dark matter (CDM) and show that the density fluctuation spectrum obtained from the cosmic microwave background (CMB) data together with large galaxy surveys (e.g., the Sloan Digital Sky Survey), puts strong limits on the rate of decay of the vacuum energy. CDM produced by a decaying vacuum energy would dilute the density fluctuation spectrum, created in the primordial universe and observed with large galaxy surveys at low redshifts. Our results indicate that the decay rate of the vacuum energy into CDM is extremely small.

引用

页码：063529 / 1

页数：4

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