Superconformal inflationary α-attractors

Renata Kallosh, Andrei Linde, Diederik Roest

Research output: Contribution to journalArticleAcademic

419 Citations (Scopus)
313 Downloads (Pure)


Recently a broad class of superconformal inflationary models was found leading to a universal observational prediction ns = 1 − 2/N and r = 12/N^2. Here we generalize this class of models by introducing a parameter α inversely proportional to the curvature of the inflaton Kähler 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 ns = 1 − 2/N and r = α 12/N^2 , which corresponds to the part of the ns − r plane favored by the Planck data.
Original languageEnglish
Pages (from-to)198-0-198-12
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 27-Nov-2013


  • Supersymmetry Breaking
  • Supergravity Models

Cite this