Unification of polynomial and exponential cosmological attractors

Renata Kallosh; Andrei Linde

Unification of polynomial and exponential cosmological attractors

High Energy Physics - Theory 2026-07-08 v1 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology

Authors: Renata Kallosh , Andrei Linde

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Abstract

We introduce a family of simple $\alpha$ -attractor models that can interpolate between exponential and polynomial cosmological attractors. By varying the interpolation parameter $\mu$ in these models, one can scan a wide range of values of the spectral index $n_{s}$ matching any combination of CMB and DESI data.

Keywords

alpha-attractors cosmological attractors spectral index inflation CMB DESI

Cite

@article{arxiv.2607.07684,
  title  = {Unification of polynomial and exponential cosmological attractors},
  author = {Renata Kallosh and Andrei Linde},
  journal= {arXiv preprint arXiv:2607.07684},
  year   = {2026}
}

Comments

3 page, 2 figures