2001/02/08 by I. G. Dymnikova, Irina Dymnikova, Anna Dobosz +5
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Black hole (networking) #Classical mechanics #Computer science #Computer security #Cosmology and Gravitation Theories #Physics #Theoretical physics #gr-qc
paper · pdf · doi:10.1016/s0370-2693(01)00174-5
published as Phys.Lett. B506 (2001) 351-361 · REVTEX, 9 pages, 13 figures. To appear in Physics Letters B
arxiv created 2001/02/08 · openalex publication_date 2001/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We address the question of universes inside a Λ black hole which is described by a spherically symmetric globally regular solution to the Einstein equations with a variable cosmological term Λμν, asymptotically Λgμν as r→ 0 with Λ of the scale of symmetry restoration. Global structure of spacetime contains an infinite sequence of black and white holes, vacuum regular cores and asymptotically flat universes. Regular core of a Λ white hole models the initial stages of the Universe evolution. In this model it starts from a nonsingular nonsimultaneous big bang, which is followed by a Kasner-type anisotropic expansion. Creation of a mass occurs mostly at the anisotropic stage of quick decay of the initial vacuum energy. We estimate also the probability of quantum birth of baby universes inside a Λ black hole due to quantum instability of the de Sitter vacuum.