New exponential and polynomial ξ -attractors
Abstract
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 n s spanning a broad range 1-2/ N ≤ n s < 1-1/ N , and r can decrease to zero in the limit ξ → ∞. This is sufficient to match any combination of Planck, BICEP/Keck, ACT, SPT, and DESI data. We present a supergravity implementation of these models.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Black Holes and Theoretical Physics
Advanced Differential Geometry Research
Publication details
- Journal / source
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Volume
- 2026
- Issue
- 09
- Pages
- 027–027
- Publication date
- 1 September 2026