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Updated: Jan 8, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
New Source for QCD Axion Dark Matter Production: Curvature Induced
Cem Eröncel1, Yann Gouttenoire2,3, Ryosuke Sato4
1İstinye University, Faculty of Engineering and Natural Sciences, 34396, İstanbul, Türkiye.
Abstract:
We discuss a novel mechanism for generating dark matter from a fast-rolling scalar field, relevant for both inflation and rotating axion models, and apply it specifically to the (QCD) axion. Dark matter comes from scalar field fluctuations generated by the product of the curvature perturbation and the fast-rolling background field. These fluctuations can explain the totality of dark matter in a vast axion parameter space, particularly for the QCD axion, which will be targeted by upcoming experiments. We review the constraints on this mechanism and potential gravitational-wave signatures.
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