Anisotropic cosmological dynamics in Einstein-Gauss-Bonnet gravity: an example of dynamical compactification in 7+1 dimensions

Chirkov, D; Giacomini, A; Toporensky, A

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