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 spanning a broad range , and can decrease to zero in the limit . This is sufficient to match any combination of Planck, BICEP/Keck, ACT, SPT, and DESI data. We present a supergravity implementation of these models.
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