Variable G correction for dark energy model in higher dimensional cosmology

Author： Chakraborty Shuvendu   Debnath Ujjal   Jamil Mubasher  

Publisher： NRC Research Press

ISSN： 1208-6045

Source： Canadian Journal of Physics, Vol.90, Iss.4, 2012-04, pp. : 365-371

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

In this work, we have considered N( = 4 + d)-dimensional Einstein field equations in which 4-dimensional space–time is described by a Friedmann–Robertson–Walker metric and that of the extra d-dimensions by an euclidean metric. We have calculated the corrections to statefinder parameters due to variable gravitational constant G in higher dimensional cosmology. We have considered two special cases: whether dark energy and dark matter interact or not. In a universe where the gravitational constant is dynamic, the variable G-correction to statefinder parameters is inevitable. The statefinder parameters are also obtained for generalized Chaplygin gas in the effect of the variation of G correction.

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