Dark Energy from $\alpha$-Attractors

Abstract

A class of inflation theories called $\alpha$-attractors has been investigated recently with interesting properties interpolating between quadratic potentials, the Starobinsky model, and an attractor limit. Here we examine their use for late time cosmic acceleration. We generalize the class and demonstrate how it can interpolate between thawing and freezing dark energy, and reduce the fine tuning of initial conditions, allowing $w\approx -1$ for a prolonged period or as a de Sitter attractor.

6 pages, 6 figures

References in corpus (5)

• Cosmology and the Fate of Dilatation Symmetry
• The Unity of Cosmological Attractors
• Hilltop Quintessence
• Dynamical and Gravitational Instability of Oscillating-Field Dark Energy and Dark Matter
• Spinodal Instabilities and Super-Planckian Excursions in Natural Inflation

Cited by in corpus (2)

• Inflationary $\alpha$-attractors from $F(R)$ Gravity
• $\alpha$-attractor dark energy in view of next-generation cosmological surveys