Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-10-01
Can.J.Phys.87:201-203,2009
Physics
High Energy Physics
High Energy Physics - Theory
accepted in the Canadian Journal of Physics, to appear in a special issue devoted to the proceedings of Theory Canada 4
Scientific paper
10.1139/P08-087
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 and weaker at larger distances.
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