A collision between a brane and an antibrane can leave behind topological defects, including perhaps the Big Bang itself. But however elegant this theory, the problem with string theory is that it makes no falsifiable predictions, scientists being unable to find two Universe-sized objects that you can crash into each other. According to Richard Haley, who led the team at Lancaster University, a testable model can be found in a test tube of liquid helium.
Friday, December 28, 2007
The Cosmos in a Test Tube