Statistical Approach to the Cosmological-Constant Problem on Brane Worlds

Details Statistical Approach to the Cosmological-Constant Problem on Brane Worlds Statistical Approach to the Cosmological-Constant Problem on Brane Worlds

2007-08-23

arxiv.org/abs/0708.3143v2

JCAP 0902:030,2009

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 6 figures, version published in JCAP

Scientific paper

10.1088/1475-7516/2009/02/030

We investigate the physically accepted solutions of general Braneworld scenarios, scanning uniformly the associated parameter space. Without making any further assumptions we find that solutions which give "small" Hubble parameters on the physical brane, and therefore "small" effective cosmological constants on the 4D Universe, are far more probable than those with "large" ones. Eventually, their distribution tends to the $\delta$-function in the limit of continuous covering of the parameter space.

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