Embeddings and time evolution of the Schwarzschild wormhole
  We show how to embed spacelike slices of the Schwarzschild wormhole (or Einstein-Rosen bridge) in R3. Graphical images of embeddings are given, including depictions of the dynamics of this nontraversable wormhole at constant Kruskal times up to, and beyond, the "pinching off" at Kruskal times \pm1. 
Peter Collas and David Klein
gr-qc math-ph math.MP