Using Energy Conditions to Distinguish Brane Models and Study Brane Matter

Abstract

Current universe (assumed here to be normal matter on the brane) is pressureless from observations. In this case the energy condition is ${\rho }_0\ge 0$ 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 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.

5pages, no figures; Accepted by Communications in Theoretical Physics

References in corpus (2)

• Constraining f(R) theories with the energy conditions
• Using (4+1) split and energy conditions to study the induced matter in 5D Ricc-flat cosmology