Einstein Static Universe in Braneworld Scenario

Understand

The stability of Einstein static universe against homogeneous scalar perturbations in the context of braneworld scenario is investigated.

• The stability regions are obtained in terms of the constant geometric linear equation of state parameter $\omega_{extr}=p_{extr}/\rho_{extr}$ and are studied for each evolutionary era of the universe.
• The results are discussed for the case of closed, open or flat universe in each era under the obtained restricting conditions.
• We also briefly investigate the stability against vector and tensor perturbations.