$\Lambda$-CDM Universe: A Phenomenological Approach With Many Possibilities

U. Mukhopadhyay, Saibal Ray, S. B. Dutta Choudhury

A time-dependent phenomenological model of $\Lambda$, viz. $\dot{\Lambda }\sim H^3$ is selected to investigate the $\Lambda$-CDM cosmology. Time-dependent form of the equation of state parameter $\omega$ i…