Turkish Journal of Physics
Abstract
This paper presents cosmological models in which the gravitational and cosmological constants G and \Lambda are time-dependent. We find a variety of solutions for the variation of cosmological parameters. It is also found that, in the case of matter dominated Robertson-Walker Universe, if the cosmological constant \Lambda \ne 0, the Hubble's constant H is not constant at all but inversely proportional to the cosmic time. The conservation law for the energy momentum tensor is still valid with our law of variation: \Lambda \propto R^{-2} and G\rho \propto \frac{\Lambda }{8\pi}.
DOI
10.3906/fiz-1007-2
Keywords
Cosmology, cosmological model, homogeneous isotropic, cosmic time, variable cosmological constant
First Page
173
Last Page
180
Recommended Citation
SINGH, KANGUJAM PRIYOKUMAR
(2010)
"On Robertson-Walker universe model with variable cosmological term and gravitational constant in cosmological relativity theory,"
Turkish Journal of Physics: Vol. 34:
No.
3, Article 5.
https://doi.org/10.3906/fiz-1007-2
Available at:
https://journals.tubitak.gov.tr/physics/vol34/iss3/5
