Vanishing of the Cosmological Constant, Stability of the Dilaton and Inflation

Details Vanishing of the Cosmological Constant, Stability of the Dilaton and Inflation Vanishing of the Cosmological Constant, Stability of the Dilaton and Inflation

1995-01-10

arxiv.org/abs/hep-ph/9501250v1

Int.J.Mod.Phys. D5 (1996) 567

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, 3 figures compressed and uuencoded

Scientific paper

We study the possibility of canceling the cosmological constant in supergravity string models. We show that with a suitable choice of superpotential the vacuum energy may vanish with the dilaton field at its minimum and supersymmetry broken with a large hierarchy. We derive the condition for which the introduction of a chiral potential, e.g. the inflaton potential, does not destabilize the dilaton field even in the region where the scalar potential takes positive values. This allows for an inflationary potential with the dilaton frozen at its minimum.

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