Gia Dvali solves 1/2 of the C.C. problem?

My friend Oldřich Klimánek who is currently translating "The Fabric of the Cosmos" by Brian Greene to Czech has pointed out the following popular article to me:

• Gia Dvali and dark energy

What does he say about the cosmological constant? Well, it does not exist. The accelerating expansion of the Universe is, Dvali argues, due to a "leak of gravitational force" into extra dimensions that only appears at very long distances.

So far I don't exactly understand how Gia's picture works. But definitely, it's one of the proposals to modify gravity in the extreme infrared - he talks about the Yukawa-Newton potential (arising from massive gravity). Dvali predicts new modifications of the motion of the Moon and the planets. In the case of the Moon, it should be testable because of the mirrors on the lunar surface that have been installed by Apollo 11 (and terrestrial lasers).




I am now looking at several papers such as

• hep-th/0402130
• hep-th/0501157

and although the general words sounds appealing, the details have not convinced me yet.

Find the first gravitational wave

Incidentally, did you consider the possibility that you would be the first person in the world to discover the gravitational waves, in co-operation with the LIGO experiment? It's easy as long as you have

• Einstein at home