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Inflation with blowing-up solution of cosmological constant problem

Jihn E. Kim1,2

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The cosmological constant problem is how one chooses, without fine-tuning, one singular point Λeff = 0 for the 4D cosmological constant. We argue that some recently discovered 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.


Keywords

Physics of the Early Universe

Extra Large Dimensions

Cosmology of Theories beyond the SM

PACS

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 01 (January 2003)

Received 12 October 2002, accepted for publication 20 January 2003

Published 30 January 2003



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