Maximal supersymmetry and B-mode targets

Renata Kallosh, Andrei Linde, Timm Wrase, Yusuke Yamada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Extending the work of Ferrara and one of the authors [1], we present dynamical cosmological models of α-attractors with plateau potentials for 3α = 1, 2, 3, 4, 5, 6, 7. These models are motivated by geometric properties of maximally supersymmetric theories: M-theory, superstring theory, and maximal N = 8 supergravity. After a consistent truncation of maximal to minimal supersymmetry in a seven-disk geometry, we perform a two-step procedure: 1) we introduce a superpotential, which stabilizes the moduli of the seven-disk geometry in a supersymmetric minimum, 2) we add a cosmological sector with a nilpotent stabilizer, which breaks supersymmetry spontaneously and leads to a desirable class of cosmological attractor models. These models with ns consistent with observational data, and with tensor-to-scalar ratio r ≈ 10−2 − 10−3, provide natural targets for future B-mode searches. We relate the issue of stability of inflationary trajectories in these models to tessellations of a hyperbolic geometry.

Original languageEnglish
Article number144
JournalJournal of High Energy Physics
Volume2017
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1
Externally publishedYes

Keywords

  • Cosmology of Theories beyond the SM
  • Extended Supersymmetry
  • Supergravity Models

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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