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- W4229693478 abstract "In a bid to resolve lingering problems in cosmology, more focus is being tilted towards cosmological models in which physical constants of nature are not necessarily real constants, but varying with cosmic time. In this paper we study cosmology in nonlinear electrodynamics with the Newton's gravitational constant $G$ not a constant but varies with the scale factor of the universe. The evolution of the scale factor $a(t)$ in this model depends on $alpha$, which gives an steady universe when $alpha=0.5$. As $alpha$ increases to $alpha=1.0, 1.5, 2.0, 3.0$ the universe enter into inflation scenario after that the magnetic monopole field decayed and is converted to radiation. We checked the stability of the model and obtained that it is classically stable with the best condition for the stability at $5/2geq alpha >7/4$ ." @default.
- W4229693478 created "2022-05-11" @default.
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- W4229693478 date "2020-07-02" @default.
- W4229693478 modified "2023-10-18" @default.
- W4229693478 title "Cosmology with Variable <em>G</em> and Nonlinear Electrodynamics" @default.
- W4229693478 doi "https://doi.org/10.20944/preprints202007.0005.v1" @default.
- W4229693478 hasPublicationYear "2020" @default.
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