Anisotropic cosmological dynamics in Einstein--Gauss--Bonnet gravity: an example of dynamical compactification in $7+1$ dimensionстатья
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Дата последнего поиска статьи во внешних источниках: 5 августа 2020 г.
Аннотация: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.