Black holes and the absorption rate of cosmological scalar fields

被引：11

作者：

Arturo Urena-Lopez, L. ^{[1
]}

Fernandez, Lizbeth M. ^{[1
]}

机构：

[1] Univ Guanajuato, Dept Fis, DCI, Guanajuato 37150, Mexico

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 04期

关键词：

TIME PHASE-TRANSITION; GALACTIC HALO; DARK-MATTER; QUINTESSENCE;

D O I：

10.1103/PhysRevD.84.044052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the absorption of a massless scalar field by a static black hole. Using the continuity equation that arises from the Klein-Gordon equation, it is possible to define a normalized absorption rate Gamma(t) for the scalar field as it falls into the black hole. It is found that the absorption mainly depends upon the characteristics wavelengths involved in the physical system: the mean wave number and the width of the wave packet, but that it is insensitive to the scalar field's strength. By taking a limiting procedure, we determine the minimum absorption fraction of the scalar field's mass by the black hole, which is around 50%.

引用

页数：6

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