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arXiv · 1812.11855

Examples of stable exponential cosmological solutions with three factor spaces in EGB model with a $\Lambda$-term

K. K. Ernazarov·V. D. Ivashchuk
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Abstract

We deal with Einstein-Gauss-Bonnet model in dimension $D$ with a $\Lambda$-term. We obtain three stable cosmological solutions with exponential behavior (in time) of three scale factors corresponding to subspaces of dimensions $(l_0,l_1,l_2) = (3, 4, 4), (3, 3, 2), (3, 4, 3)$ and $D = 12, 9, 11$, respectively. Any solution may describe an exponential expansion of $3$-dimensional subspace governed by Hubble parameter $H$. Two of them may also describe a small enough variation of the effective gravitational constant $G$ (in Jordan frame) for certain values of $\Lambda$.

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K. K. Ernazarov, V. D. Ivashchuk. 2018-12-26. Examples of stable exponential cosmological solutions with three factor spaces in EGB model with a $\Lambda$-term. https://doi.org/10.1134/s0202289319020063

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