Studies on static-cosmological model

eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences October, 2017 29 10 276 284 http://dx.doi.org/10.22147/jusps-B/291004 858 article Studies on static-cosmological model P. K. PARIDA (prashanta_math@yahoo.co.in) 1 Department of Mathematics, C.V. Raman College of Engineering, Bhubaneawar-752054 (India) <p style="text-align: justify;">The Cosmological principle is the hypothesis that the universe is spatially homogeneous and isotropic. In the study of cosmological model, the Einstein field equations and construct a static model of the universe. A method has proposed by Berman 1991 3 on the basis of the conservation law, to incorporate the variable Gravitational constant ‘G ’ and Cosmological constant ‘  ’ in the Einstein field equations. The solutions are obtained by choosing suitable values for the constant  and  , a number of cosmological models may be constructed and the validity of these models may be tested on the theoretical and observational grounds.</p> https://ultraphysicalsciences.org/paper/858/ Cosmological model perfect fluid static model variable cosmological gravitational constants MSC Classification number: 83C05, 83F05