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arXiv · 1310.1574

Notes on the compatibility of type Ia supernovae data and varying--$G$ cosmology

F. Shojai·A. Shojai
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Abstract

Observational data for type Ia supernovae, shows that the expansion of the universe is accelerated. This accelerated expansion can be described by a cosmological constant or by dark energy models like quintessence. An interesting question may be raised here. Is it possible to describe the accelerated expansion of universe using varying--$G$ cosmological models? Here we shall show that the price for having accelerated expansion in slow--varying--$G$ models (in which the dynamical terms of $G$ are ignored) is to have highly non--conserved matter and also that it is in contradiction with other data.

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F. Shojai, A. Shojai. 2013-10-06. Notes on the compatibility of type Ia supernovae data and varying--$G$ cosmology. https://doi.org/10.1088/0031-8949%2F88%2F05%2F055902

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