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arXiv · 0712.3397

Using Energy Conditions to Distinguish Brane Models and Study Brane Matter

Yongli Ping·Lixin Xu·Baorong Chang·Hongya Liu
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Abstract

Current universe (assumed here to be normal matter on the brane) is pressureless from observations. In this case the energy condition is $ρ_0\geq0$ 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 on the brane. If there is nonnormal matter or energy (for example dark energy with $w<-1/3$) on the brane, the universe is accelerated.

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Yongli Ping, Lixin Xu, Baorong Chang, Hongya Liu. 2008-06-23. Using Energy Conditions to Distinguish Brane Models and Study Brane Matter. https://doi.org/10.1088/0253-6102%2F50%2F2%2F21

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