2018/12/31 by K. K. Ernazarov, В. Д. Иващук, V. D. Ivashchuk · 7 citations
Mathematics · Physics and Astronomy · #Applied mathematics #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Computer science #Constant (computer programming) #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dimension (graph theory) #Einstein #Exponential function #Galaxies: Formation, Evolution, Phenomena #Gravitation #Gravitational constant #Hubble's law #Lambda-CDM model #Linear subspace #Mathematical analysis #Mathematical physics #Mathematics #Metric expansion of space #Physics #Pure mathematics #Quantum mechanics #Scale (ratio) #Scale factor (cosmology) #Subspace topology #Term (time) #gr-qc
paper · pdf · doi:10.1134/s0202289319020063
published in Gravitation and Cosmology 25(2), 164-168 (Pleiades Publishing) · 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
openalex created_date 2019/01/11 · arxiv created 2019/01/25 · openalex publication_date 2019/04/01 · arxiv updated 2019/06/19 · openalex updated_date 2026/08/05
We deal with the Einstein-Gauss-Bonnet model in dimension D with a cosmological constant. 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 of the solutions may describe an exponential expansion of 3D subspace governed by the Hubble parameter H . Two of them may also describe a small enough variation of the effective gravitational constant G (in Jordan’s frame) for certain values of Λ.