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arXiv · 2107.12141

Non-minimal coupling inspires the Dirac cosmological model

Hooman Moradpour·Hamid Shabani·Amir Hadi Ziaie·Umesh Kumar Sharma
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Abstract

In the framework of the generalized Rastall theory (GRT), we study the ability of a non-minimal coupling between geometry and matter fields in order to provide a setting which allows for a variable G during the cosmic evolution. In this regard, the compatibility of this theory with Dirac hypothesis on the variations of G is investigated, and additionally, the possibility of obtaining the current accelerated universe is also addressed. In summary, our study indicates that, in GRT, having in hand the G profile, one may find the corresponding non-minimal coupling between the energy source and geometry and vise versa, in a compatible way with the current accelerated universe.

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Hooman Moradpour, Hamid Shabani, Amir Hadi Ziaie, Umesh Kumar Sharma. 2021-07-11. Non-minimal coupling inspires the Dirac cosmological model. https://doi.org/10.1140/epjp/s13360-021-01713-4

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