α-attractors: Planck, LHC and dark energy

John Joseph Carrasco, Renata Kallosh, Andrei Linde*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Abstract: We develop four-parameter supergravity models of inflation and dark energy, constrained so that δρρ$$ \frac{\delta \rho }{\rho } $$, ns and the cosmological constant Λ take their known observable values, but where the mass of gravitino m3/2 and the tensor-to-scalar ratio r are free parameters. We focus on generalized cosmological α-attractor models, with logarithmic Kähler potentials, a nilpotent goldstino and spontaneously broken supersymmetry at the de Sitter minimum. The future data on B-modes will specify the parameter α, measuring the geometry of the Kähler manifold. The string landscape idea for dark energy is supported in these models via an incomplete cancellation of the universal positive goldstino and negative gravitino contribution. The scale of SUSY breaking M related to the mass of gravitino in our models is a controllable parameter, independent on the scale of inflation, it will be constrained by LHC data and future collider Energy-frontier experiments.

Original languageEnglish (US)
Article number147
JournalJournal of High Energy Physics
Volume2015
Issue number10
DOIs
StatePublished - Oct 1 2015

Keywords

  • Cosmology of Theories beyond the SM
  • Supergravity Models

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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