2016
DOI: 10.1155/2016/9743970
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A Time-DependentΛandGCosmological Model Consistent with Cosmological Constraints

Abstract: The prevailing constantΛ-Gcosmological model agrees with observational evidence including the observed red shift, Big Bang Nucleosynthesis (BBN), and the current rate of acceleration. It assumes that matter contributes 27% to the current density of the universe, with the rest (73%) coming from dark energy represented by the Einstein cosmological parameterΛin the governing Friedmann-Robertson-Walker equations, derived from Einstein’s equations of general relativity. However, the principal problem is the extreme… Show more

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Cited by 16 publications
(9 citation statements)
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“…In order to solve the Einstein field equations, they assumed that the cosmological term Λ was proportional to R −m where m being a constant and R represents the scale factor. Similarly time-dependent gravitational and cosmological constants investigated by several researchers [11], [18], [20], [23], [27], [33] and [34]. Bianchi Type space -times was also studied by so many authors assuming different conditions [2], [3], [8], [17], [22], [25] and [28].…”
Section: Introductionmentioning
confidence: 99%
“…In order to solve the Einstein field equations, they assumed that the cosmological term Λ was proportional to R −m where m being a constant and R represents the scale factor. Similarly time-dependent gravitational and cosmological constants investigated by several researchers [11], [18], [20], [23], [27], [33] and [34]. Bianchi Type space -times was also studied by so many authors assuming different conditions [2], [3], [8], [17], [22], [25] and [28].…”
Section: Introductionmentioning
confidence: 99%
“…In Einstein's field equation, G acts as a coupling constant between the geometry of spacetime and matter. In quantum mechanics, G is essential in the definition of the Planck constant [52]. While in SCM, G is an invariant quantity.…”
Section: Introductionmentioning
confidence: 99%
“…In the Einstein's field equation, G acts as a coupling constant between geometry of spacetime and matter. In quantum mechanics, G is essential in the definition of Planck constant [48]. While in SCM, G is an invariant quantity, it has been noted that there are significant evidence that gravitational constant G can be varying in a time [49].…”
Section: Introductionmentioning
confidence: 99%