Wormholes and black universes communicated with extra dimensions

International Conference on Particle Physics and Astrophysics

物理学;天文学

Bronnikov, K.A.^1,2,3 ; Korolyov, P.A.^1 ; Makhmudov, A.^3 ; Skvortsova, M.V.^1

Peoples' Friendship University of Russia, RUDN University, 6 Miklukho-Maklaya St., Moscow

117198, Russia^1

Center for Gravitation and Fundamental Metrology, VNIIMS, 46 Ozyornaya St., Moscow

119361, Russia^2

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^3

关键词: Black holes;    Extra dimensions;    General Relativity;    Lorentzian space;    Physical laws;    Scalar fields;    Spherical symmetry;    Universe types;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012090/pdf
DOI  :  10.1088/1742-6596/798/1/012090

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

In 6D general relativity with a phantom scalar field as a source of gravity, we present solutions that implement a transition from an effective 4D geometry times small extra dimensions to an effectively 6D space-time where the physical laws are different from ours. We consider manifolds with the structure0×1×2, where0is 2D Lorentzian space-time while each of1,2can be a 2-sphere or a 2-torus. Some solutions describe wormholes with spherical symmetry in our space-time and toroidal extra dimensions. Others are of black universe type: at one end there is a 6D asymptotically anti-de Sitter black hole while beyond the horizon the geometry tends to a 4D de Sitter cosmology times a small 2D spherical extra space.