Volume 96, Issue 3
27 January 2006
On the Cover
Spacetime diagrams for models designed to evade the Big Bang singularity. The left diagram depicts a pre-Big-Bang scenario, while the other two show how a new string theory model evades the singularity by creating two Universes.
From the article:
Brane Decay and an Initial Spacelike Singularity
Shinsuke Kawai, Esko Keski-Vakkuri, Robert G. Leigh, and Sean Nowling
Phys. Rev. Lett. 96, 031301 (2006)