Birth of a Closed Universe of Negative Spatial Curvature
  We propose a modified form of the spontaneous birth of the universe by quantum tunneling. It proceeds through topology change and inflation, to eventually become a universe with closed spatial sections of negative curvature and nontrivial global topology. 
S. S. e Costa and H. V. Fagundes (Instituto de Fisica Teorica/UNESP -   Sao Paulo)