Degravitation

by Gia Dvali (CERN)

Wednesday 19 Sept 2007, 14:00 → 15:00 Europe/Zurich

TH Theory Conference Room (CERN)

We study the possibility of decoupling gravity from the vacuum energy, or equivalently, degravitation of sources of characteristic wavelength exceeding a certain macroscopic (super) horizon scale L. We study the underlying physics and the consistency of this phenomenon. In particular, we show that degravitation is equivalent to giving a small, of order 1/L, mass (or a decay width) to the graviton. This fact has profound physical implications for the degravitation idea. We discuss possible experimental tests that range from precision cosmology and precision gravitation measurements at earth-moon distances, to the possible signatures at the particle accelerators.

Slides degravitation.pdf degravitation.ppt