A dark energy solution?

0703364.pdf (application/pdf Object)

The link is to a paper on arxiv in which a couple of guys claim to have sorted out what causes dark energy. Not that I can understand it properly, but they say their solution is a relatively simple one, which cuts out the need for a lot of the more complicated stuff in other proposals. It's also testable (unlike string theory.)

Good luck guys. If their solution turns out to be correct, remember that I may one of the first bloggers in the world to have posted about it.