Cascading Gravity and Degravitation – Claudia de Rham
Date: Tue. March 3rd, 2009, 11:30 am-12:30 pmLocation: Rockefeller 221
Cascading gravity is an explicit realization of the idea of degravitation, where gravity behaves as a high-pass filter. This could explain why a large cosmological constant does not backreact as much as anticipated from standard General Relativity. The model relies on the presence of at least two infinite extra dimensions while our world is confined on a four-dimensional brane. Gravity is then four-dimensional at short distances and becomes weaker at larger distances.