A new Cosmological model that including inflation, deceleration, acceleration and deceleration again

@inproceedings{Perera2019ANC,
  title={A new Cosmological model that including inflation, deceleration, acceleration and deceleration again},
  author={P. V. N. M. C. Perera and K. Katugampala},
  year={2019}
}
Here Λ is cosmological constant. The Einstein’s Field Equations are modified. Λ is considered as a variable of cosmic time. The assumptions of a homogeneous and isotropic universe based on the Mach’s principal are made. The Robertson-Walker metric in spherical polar coordinates are started. The Christoffel symbols were found to define the Ricci tensor, the curvature scalar and the energy-momentum tensor using the Robertson-Walker metric. Using the Robertson-Walker metric and Energy momentum… Expand