Higher dimensional unified description of early universe with variable G and Lambda
Yükleniyor...
Dosyalar
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer/Plenum Publishers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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=(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.
Açıklama
Anahtar Kelimeler
Higher Dimensional Space Time, Cosmology, Early Universe, Inflationary Model, Cosmological Parameters
Kaynak
International Journal Of Theoretical Physics
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
47
Sayı
6
