期刊
PHYSICS LETTERS B
卷 473, 期 3-4, 页码 241-245出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(99)01505-1
关键词
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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.
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