Phenomenological Varying Modified Chaplygin Gas with Variable G and I⟩: Toy Models for Our Universe

In this paper, we have considered varying modified Chaplygin gas in case of variable G and I >. Since varying G and I > give rises to modified form of field equations and conservation law, we have considered two different toy models. In the first model, the Universe is filled with a phenomenological gas while in the second one, there is the existence of gas and a matter with P = omega(t)rho (m) . By considering sign changeable interaction between fluids we have analyzed important cosmological parameters such as EoS parameter of the fluids and deceleration parameter q of the models.