Dark Energy Phenomenon from Backreaction Effect

Yan-Hong Yao,Xin-He Meng

Fig. 1 (Color online) The $1\sigma$, $2\sigma$ and $3\sigma$ confidence regions and best fitting point of of the free parameters $\Omega_{m}^{\mathcal{D}_0},n$ for the scaling backreaction model, along with their own probability density function. The prior for $\Omega_{m}^{\mathcal{D}_0}\varpropto H(0.5-\Omega_{m}^{\mathcal{D}_0})H(\Omega_{m}^{\mathcal{D}_0}-0.1)$,The prior for $n\varpropto H(1.5-n)H(n-(-1.5))$, $H(x)$ is the step function.