Dark Energy Constraints in light of Pantheon SNe Ia, BAO, Cosmic
  Chronometers and CMB Polarization and Lensing Data
  To explore whether there is new physics going beyond the standard
cosmological model or not, we constrain seven cosmological models by combining
the latest and largest Pantheon Type Ia supernovae sample with the data
combination of baryonic acoustic oscillations, cosmic microwave background
radiation, Planck lensing and cosmic chronometers. We find that a spatially
flat universe is preferred in the framework of $\Lambda$CDM cosmology, that the
constrained equation of state of dark energy is very consistent with the
cosmological constant hypothesis, that there is no evidence of dynamical dark
energy, that there is no hint of interaction between dark matter and dark
energy in the dark sector of the universe, and that there does not exist the
sterile neutrinos in the neutrino sector of the universe. We also give the
95$\%$ limit of the total mass of three active neutrinos $\Sigma m_\nu<0.178$
eV. It is clear that there is no any departure from the standard cosmological
model based on current observational datasets.
