Landscape Predictions from Cosmological Vacuum Selection

Details Landscape Predictions from Cosmological Vacuum Selection Landscape Predictions from Cosmological Vacuum Selection

2007-03-23

arxiv.org/abs/hep-th/0703206v4

Phys.Rev.D75:123520,2007

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, 6 figures, v4 prd format, minor editing

Scientific paper

10.1103/PhysRevD.75.123520

In BP models with hundreds of fluxes, we compute the effects of cosmological dynamics on the probability distribution of landscape vacua. Starting from generic initial conditions, we find that most fluxes are dynamically driven into a different and much narrower range of values than expected from landscape statistics alone. Hence, cosmological evolution will access only a tiny fraction of the vacua with small cosmological constant. This leads to a host of sharp predictions. Unlike other approaches to eternal inflation, the holographic measure employed here does not lead to "staggering", an excessive spread of probabilities that would doom the string landscape as a solution to the cosmological constant problem.

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