U(1) symmetric $\alpha$-attractors

Abstract

We present a class of supergravity $\alpha$-attractors with an approximate global U(1) symmetry corresponding to the axion direction. We also develop a multi-field generalization of these models and show that the $\alpha$-attractor models with U(1) symmetries have a dual description in terms of a two-form superfield coupled to a three-form superfield.

15pages, 3 figures, v2:comments, reference, and appendix added, v3:reference added, version published in JHEP

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• $\alpha$-attractor-type Double Inflation
• Topological couplings in higher derivative extensions of supersymmetric three-form gauge theories
• Supergravity, $\alpha$-attractors and primordial non-Gaussianity