Higher Dimensional Unified Description of Early Universe with Variable G and Λ

Details Higher Dimensional Unified Description of Early Universe with Variable G and Λ Higher Dimensional Unified Description of Early Universe with Variable G and Λ

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ijtp...47.1542k&link_type=abstract

International Journal of Theoretical Physics, Volume 47, Issue 6, pp.1542-1551

Mathematics

Logic

Higher Dimensional Space Time, Cosmology, Early Universe, Inflationary Model, Cosmological Parameters

Scientific paper

A 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=( γ-1) ρ, where γ is adiabatic parameter varies continuously as the universe expands. The functional form γ 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 Λ 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.

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