Kazan (Volga region) Federal University, KFU
KAZAN
FEDERAL UNIVERSITY
 
INHOMOGENEOUS COMPACT EXTRA DIMENSIONS AND DE SITTER COSMOLOGY
Form of presentationArticles in Russian journals and collections
Year of publication2020
Языкрусский
  • Popov Arkadiy Aleksandrovich, author
  • Rubin Sergey Georgievich, author
  • Bronnikov Kirill Aleksandrovich, author
  • Bibliographic description in the original language Bronnikov, K.A., Popov, A.A. & Rubin, S.G. Inhomogeneous compact extra dimensions and de Sitter cosmology. Eur. Phys. J. C 80, 970 (2020)
    Annotation In the framework of multidimensional f(R) gravity, we study the possible metrics of compact extra dimensions assuming that our 4D space has the de Sitter metric. Manifolds described by such metrics could be formed at the inflationary and even higher energy scales. It is shown that in the presence of a scalar field, it is possible to obtain a variety of inhomogeneous metrics in the extra factor space M2. Each of these metrics leads to a certain value of the 4D cosmological constant Λ4, and in particular, it is possible to obtain Λ4=0, as is confirmed by numerically obtained solutions. A nontrivial scalar field distribution in the extra dimensions is an important feature of this family of metrics. The obtained solutions are shown to be stable under extra-dimensional perturbations.
    Keywords f(R) gravity, extra dimensions, de Sitter cosmology
    The name of the journal EUROPEAN PHYSICAL JOURNAL C
    URL https://link.springer.com/article/10.1140/epjc/s10052-020-08547-x#citeas
    Please use this ID to quote from or refer to the card https://repository.kpfu.ru/eng/?p_id=240392&p_lang=2
    Resource files 
    File name Size (MB) Format  
    InhomogeneousCompactExtraDimen.pdf 0,86 pdf show / download

    Full metadata record