[JumpCrisscross]

> Suppose you took a small region of the universe and reheated it to be unification temperature today...I don't suppose there's any way to do that...?

You're describing a particle accelerator. When we talk about the LHC accessing "higher energies" than the Tevatron [1] we are saying it is "baking" small parts of the universe to higher and higher temperatures.

[1] http://blogs.discovermagazine.com/cosmicvariance/2009/11/30/...

[rwallace]

Yep. But even if we could build a particle accelerator capable of reaching GUT energy level, it wouldn't spawn new universes, would it?