Brane-world solutions, standard cosmology, and dark radiation

被引：182

作者：

Mukohyama, S ^{[1
]}

机构：

[1] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada

来源：

PHYSICS LETTERS B | 2000年 / 473卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(99)01505-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New exact solutions of brane-world cosmology are given. These solutions include an arbitrary constant C, which is determined by the geometry Outside the brane and which affects the cosmological evolution in the brane-world. If C is zero, then the standard cosmology governs the brane-world as a low-energy effective cosmological theory. However, if C is not zero, then even in low-energy the brane-world cosmology gives predictions different from the standard one. The difference can be understood as "dark radiation'', which is not real radiation but alters cosmological evolutions. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：241 / 245

页数：5