Dynamical evolution of quintessence cosmology in a physical phase space

Jing-Zhao Qi, Ming-Jian Zhang, Wen-Biao Liu

The phase space analysis of cosmological parameters ${\Omega }_{\varphi }$ and ${\gamma }_{\varphi }$ is given. Based on this, the well-known quintessence cosmology is studied with an exponential potential $V(ϕ)=V_…