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Indexed by:期刊论文

Date of Publication:2008-08-15

Journal:COMMUNICATIONS IN THEORETICAL PHYSICS

Included Journals:SCIE、ISTIC、Scopus

Volume:50

Issue:2

Page Number:383-386

ISSN No.:0253-6102

Key Words:brane universe; cosmology; energy conditions

Abstract:Current universe (assumed here to be normal matter on the brave) is pressureless from observations. In this case the energy condition is rho(0) >= 0 and p(0) = 0. By using this condition, brane models can be distinguished. Then, assuming arbitrary component of matter in DGP model, we use four known energy conditions to study the matter oil the brane. If there is nonnormal matter or energy (for example dark energy with w < -1/3) on the brane, the universe is accelerated.