期刊
PHYSICS LETTERS B
卷 497, 期 3-4, 页码 289-295出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(00)01342-3
关键词
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We study brane-world solutions of five-dimensional supergravity in singular spaces. We exhibit a self-tuned four-dimensional cosmological constant when five-dimensional supergravity is broken by an arbitrary tension on the brane-world. The brane-world metric is of the FRW type corresponding to a cosmological constant Omega (Lambda) = 5/7 and an equation of state omega = -5/7 which are consistent with experiment. (C) 2001 Elsevier Science B.V. All rights reserved.
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