李沃龍Lee, Wo-Lung鄧余平Teng, Yu-Ping2019-09-052018-08-142019-09-052018http://etds.lib.ntnu.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=id=%22G060441018S%22.&%22.id.&http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/102503無Recently, the equation of state on dark energy has dropped lower than the edge of -1. Based on this outcome, the nature of dark energy may be far away from cosmological constant. As the adjustment on the equation of state keeps decreasing, the introduction of phantom seems necessary. By employing the observational constraints on supernovas and the acoustic scale of the cosmic microwave background(CMB), where the accuracy has become extraordinary, we apply a phenomenological method to mimic the evolution of the universe. The demonstration on the constraining evolution of phantom will show the model has high consistency with current observation.Dark energyHubble constant problemDynamically evolving dark energyquintessencephantomDark energyHubble constant problemDynamically evolving dark energyquintessencephantom