点击次数：

论文类型：期刊论文

发表时间：2007-10-01

发表刊物：INTERNATIONAL JOURNAL OF MODERN PHYSICS D

收录刊物：SCIE、Scopus

卷号：16

期号：10

页面范围：1633-1640

ISSN号：0218-2718

关键字：dark energy; brane universe

摘要：We discuss the exact solutions of brane universes and the results indicate that the Friedmann equations on the branes are modified with a new density term. Then, we assume the new term as the density of dark energy. Using Wetterich's parametrization equation of state (EOS) of dark energy, we obtain that the new term varies with the redshift z. Finally, the evolutions of the mass density parameter Omega(2), dark energy density parameter Omega(x) and deceleration parameter q(2) are studied.