Scenario of inflationary cosmology from the phenomenological $\Lambda$ models

Saibal Ray, P. C. Ray, Partha Pratim Ghosh +2

Choosing the three phenomenological models of the dynamical cosmological term $\Lambda$, viz., $\Lambda \sim (\dot{a}/a{)}^2$, $\Lambda \sim \ddot{a}/a$ and $\Lambda \sim \rho$ where $a$ is the cosmic scale facto…