Examples of Exact Exponential Cosmological Solutions with Three Isotropic Subspaces in Einstein–Gauss–Bonnet Gravity

Abstract: We consider (1+8)- and (1+10)-dimensional Einstein–Gauss–Bonnet models with a cosmological constant. Some new examples of exact solutions are obtained, governed by three non-coinciding constant Hubble-like parameters (Formula presented.) and (Formula presented.), obeying the condition (Formula presented.), corresponding to factor spaces of dimensions (Formula presented.), and (Formula presented.). In this case, the multidimensional cosmological model deals with four factor spaces: the external 3D (“our”) world and internal subspaces with dimensions (Formula presented.), and (Formula presented.). © 2022, Pleiades Publishing, Inc.