Primordial black holes in an accelerating universe

被引：9
|
作者：
Polarski, D [1 ]
机构：
[1] Univ Montpellier 2, UMR 5825 CNRS, Lab Phys Math & Theor, F-34095 Montpellier, France
[2] Univ Tours, UMR 6083 CNRS, Lab Math & Phys Theor, F-37200 Tours, France
来源：
PHYSICS LETTERS B | 2002年 / 528卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(02)01200-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
General expressions are given for the generation of Primordial Black Holes (PBH) in a universe with a presently accelerated expansion due to an (effective) cosmological constant. We give expressions both for a powerlaw scalefree primordial spectrum and for spectra which are not of that type. Specializing to the case of a pure cosmological constant A and assuming flatness, we show that a cosmological constant with Omega(Lambda,0) = 0.7 will decrease the mass variance at the PBH formation time by about 15% compared with a critical density universe. (C) 2002 Elsevier Science B.V All rights reserved.
引用
收藏
页码：193 / 198
页数：6
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