1995/04/10 by Nikolaos A. Batakis, N. A. Batakis · 4 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Diagonal #Friedmann–Lemaître–Robertson–Walker metric #Geometry #Homogeneity (statistics) #Homogeneous space #Isotropy #Mathematical physics #Mathematics #Noncommutative and Quantum Gravity Theories #Physics #Quantum mechanics #Relationship between string theory and quantum field theory #String cosmology #Theoretical physics #hep-th
paper · pdf · doi:10.1016/0370-2693(95)00582-6
published as Phys.Lett. B353 (1995) 39-45 · 12 pages, latex, 1 table, no figures
arxiv created 1995/04/10 · openalex publication_date 1995/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Bianchi-type string cosmology involves generalizations of the FRW backgrounds with three transitive spacelike Killing symmetries, but without any a priori assumption of isotropy in the 3D sections of homogeneity. With emphasis on those cases with diagonal metrics and vanishing cosmological constant which which have not been previously examined in the literature, the present findings allow an overview and the classification of all Bianchi-type backgrounds. These string solutions (at least to lowest order in alpha prime) offer prototypes for the study of spatial anisotropy and its impact on the dynamics of the early universe.