English

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

General Relativity and Quantum Cosmology 2019-06-19 v2

Abstract

We deal with Einstein-Gauss-Bonnet model in dimension DD with a Λ\Lambda-term. We obtain three stable cosmological solutions with exponential behavior (in time) of three scale factors corresponding to subspaces of dimensions (l0,l1,l2)=(3,4,4),(3,3,2),(3,4,3)(l_0,l_1,l_2) = (3, 4, 4), (3, 3, 2), (3, 4, 3) and D=12,9,11D = 12, 9, 11, respectively. Any solution may describe an exponential expansion of 33-dimensional subspace governed by Hubble parameter HH. Two of them may also describe a small enough variation of the effective gravitational constant GG (in Jordan frame) for certain values of Λ\Lambda.

Keywords

Cite

@article{arxiv.1812.11855,
  title  = {Examples of stable exponential cosmological solutions with three factor spaces in EGB model with a $\Lambda$-term},
  author = {K. K. Ernazarov and V. D. Ivashchuk},
  journal= {arXiv preprint arXiv:1812.11855},
  year   = {2019}
}

Comments

9 pages, Latex, certain editing of the text (mainly in Abstract, Introduction and Conclusions) is done; few phrases and words are deleted; one reference is added

R2 v1 2026-06-23T06:59:55.527Z