Inflation with blowing-up solution of cosmological constant problem

Details Inflation with blowing-up solution of cosmological constant problem Inflation with blowing-up solution of cosmological constant problem

2002-10-12

arxiv.org/abs/hep-th/0210117v1

JHEP 0301 (2003) 042

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX file of 20 pages including 2 eps figures

Scientific paper

10.1088/1126-6708/2003/01/042

The cosmological constant problem is how one chooses, without fine-tuning, one singular point $\Lambda_{eff}=0$ for the 4D cosmological constant. We argue that some recently discovered {\it weak self-tuning} solutions can be viewed as blowing-up this one point into a band of some parameter. These weak self-tuning solutions may have a virtue that only de Sitter space solutions are allowed outside this band, allowing an inflationary period. We adopt the hybrid inflation at the brane to exit from this inflationary phase and to enter into the standard Big Bang cosmology.

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