S. W. Hawking, Simon F. Ross
Published 1995-06-08, updated 1995-06-27Version 2
We discuss the pair creation of black holes by the breaking of a cosmic string. We obtain an instanton describing this process from the $C$ metric, and calculate its probability. This is very low for the strings that have been suggested for galaxy formation.
Comments: 9 pages, Latex, no figures. Major revision: we have retracted our argument that splitting of topologically stable strings is impossible
Journal: Phys.Rev.Lett. 75 (1995) 3382-3385
Pair creation of black holes joined by cosmic strings
Extended Geometry of Black Holes
The cosmological gravitating $σ$ model: solitons and black holes
