English

New Exponential and Polynomial $\xi$-attractors

High Energy Physics - Theory 2026-05-22 v2 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology

Abstract

We introduce a new family of cosmological attractors with non-minimal coupling of gravity and non-canonical kinetic terms. In the Einstein frame, these models transform into a class of exponential and polynomial attractors with the spectral index nsn_{s} spanning a broad range 12/Nns<11/N1-2/N \leq n_{s} < 1-1/N, and rr can decrease to zero in the limit ξ\xi \to \infty. This is sufficient to match any combination of Planck, BICEP/Keck, ACT, SPT, and DESI data. We present a supergravity implementation of these models.

Keywords

Cite

@article{arxiv.2605.04415,
  title  = {New Exponential and Polynomial $\xi$-attractors},
  author = {Renata Kallosh and Andrei Linde},
  journal= {arXiv preprint arXiv:2605.04415},
  year   = {2026}
}

Comments

19 pages, 6 figures, a reference added

R2 v1 2026-07-01T12:52:02.122Z