Red Spectral Tilt and Observable Gravity Waves in Shifted Hybrid Inflation

Details Red Spectral Tilt and Observable Gravity Waves in Shifted Hybrid Inflation Red Spectral Tilt and Observable Gravity Waves in Shifted Hybrid Inflation

2011-04-20

arxiv.org/abs/1104.4143v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

22 pages, 4 figures, and 1 table

Scientific paper

We consider supersymmetric shifted hybrid inflation models with a red tilted scalar spectral index n_s in agreement with the WMAP 7-yr central value. If non-minimal supergravity corrections are included, these models can also support a tensor-to-scalar ratio as large as r = 0.02, which may be observable by the Planck Satellite. In contrast to the standard supersymmetric hybrid inflation scenario, topological defects produced via gauge symmetry breaking are inflated away in the shifted version of the theory.

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