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Updated: Nov 9, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
NANOGrav Results and LIGO-Virgo Primordial Black Holes in Axionlike Curvaton Models
Keisuke Inomata1, Masahiro Kawasaki2,3, Kyohei Mukaida4,5
1Kavli Institute for Cosmological Physics, The University of Chicago, Chicago, Illinois 60637, USA.
Abstract:
We discuss a possible connection between the recent NANOGrav results and the primordial black holes (PBHs) for the LIGO-Virgo events. In particular, we focus on the axionlike curvaton model, which provides a sizable amount of PBHs and gravitational waves (GWs) induced by scalar perturbations around the NANOGrav frequency range. The inevitable non-Gaussianity of this model suppresses the induced GWs associated with PBHs for the LIGO-Virgo events to be compatible with the NANOGrav results. We show that the axionlike curvaton model can account for PBHs for the LIGO-Virgo events and the NANOGrav results simultaneously.
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