Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2007-10-01

Journal: INTERNATIONAL JOURNAL OF MODERN PHYSICS D

Included Journals: Scopus、SCIE

Volume: 16

Issue: 10

Page Number: 1633-1640

ISSN: 0218-2718

Key Words: dark energy; brane universe

Abstract: 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.