Can a man-made universe be achieved by quantum tunneling without an initial singularity?

Guth, A.H. and Haller, K. and Caldi, D.B. and Islam, M.M. and Mallett, R.L. and Mannheim, P.D. and Swanson, M.S.
January, 1991
High-Energy Astrophysics. American and Soviet Perspectives
Conference Proceedings Article
BIG BANG COSMOLOGY
METASTABLE STATE
QUANTUM THEORY
UNIVERSE
VACUUM
BUBBLES
CRITICAL MASS
FLUX DENSITY
GRAVITATIONAL COLLAPSE
PARTICLE THEORY
SCHWARZSCHILD METRIC
SINGULARITY (MATHEMATICS)