Superconformal Inflationary α-Attractors

2013/11/03 by Renata Kallosh, Andrei Linde, Diederik Roest · 1 citation
Physics and Astronomy · #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1007/jhep11(2013)198

14 pages, 2 figures

arxiv created 2013/11/03 · arxiv updated 2015/06/17

Abstract

Recently a broad class of superconformal inflationary models was found leading to a universal observational prediction n_s=1-2/N and r=12/N². Here we generalize this class of models by introducing a parameter α inversely proportional to the curvature of the inflaton Kahler manifold. In the small curvature (large α) limit, the observational predictions of this class of models coincide with the predictions of generic chaotic inflation models. However, for sufficiently large curvature (small α), the predictions converge to the universal attractor regime with n_s=1-2/N and r=12α/N², which corresponds to the part of the n_s-r plane favored by the Planck data.

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