Khadekar, G. S.Sarada, B.Özel, Cenap2021-06-232021-06-2320080020-77481572-9575https://doi.org/10.1007/s10773-007-9594-9https://hdl.handle.net/20.500.12491/6273A homogeneous and isotropic Friedmann-Robertson-Walker (FRW) model with varying gravitational and cosmological constant is studied in the context of higher dimensional space time. Exact solution of the field equations are obtained by using the "gamma law" equation of state p=(gamma-1)rho, where gamma is adiabatic parameter varies continuously as the universe expands. The functional form gamma which is assumed to be the function of scale factor R as proposed by Carvalho (1996) is used to analyse the behavior of scale factor R, cosmological constant Lambda and the gravitational constant G for two different phases: inflation and radiation. The various physical aspects of the early cosmological models has also been discussed in the framework of higher dimensional space time.eninfo:eu-repo/semantics/closedAccessHigher Dimensional Space TimeCosmologyEarly UniverseInflationary ModelCosmological ParametersArticle10.1007/s10773-007-9594-9476154215512-s2.0-43449091602Q3WOS:000255743000006Q3