Anisotropic cosmological dynamics in Einstein-Gauss-Bonnet gravity: an example of dynamical compactification in 7+1 dimensions
Keywords: cosmology, Einstein-Gauss-Bonnet gravity, Dynamical compactification
Abstract
We consider a particular example of dynamical compactification of an anisotropic 7+1 dimensional Universe in Einstein-Gauss-Bonnet gravity. Starting from rather general totally anisotropic initial conditions a Universe in question evolves towards a product of two isotropic subspaces. The first subspace expands isotropically, the second represents an "inner" isotropic subspace with stabilized size. The dynamical evolution does not require fine-tuning of initial conditions, though it is possible for a particular range of coupling constants. The corresponding condition have been found analytically and have been confirmed using numerical integration of equations of motion.
Más información
Título según WOS: | Anisotropic cosmological dynamics in Einstein-Gauss-Bonnet gravity: an example of dynamical compactification in 7+1 dimensions |
Título de la Revista: | GENERAL RELATIVITY AND GRAVITATION |
Volumen: | 52 |
Número: | 4 |
Editorial: | SPRINGER/PLENUM PUBLISHERS |
Fecha de publicación: | 2020 |
Idioma: | English |
DOI: |
10.1007/s10714-020-02679-x |
Notas: | ISI |