Small Cosmological Constants from a Modified Randall-Sundrum Model

Details Small Cosmological Constants from a Modified Randall-Sundrum Model Small Cosmological Constants from a Modified Randall-Sundrum Model

2007-07-24

arxiv.org/abs/0707.3484v2

Physics

High Energy Physics

High Energy Physics - Theory

6 pages

Scientific paper

We study a mechanism, inspired from the mechanism for generating the gauge hierarchy in Randall-Sundrum model, to investigate the cosmological constant problem. First we analyze the bulk cosmological constant and brane vacuum energies in RS model. We show that the five-dimensional bulk cosmological constant and the vacuum energies of the two branes all obtain their natural values. Finally we argue how we can generate a small four-dimensional effective cosmological constant on the branes through modifying the original RS model.

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