Probing the speed of scalar-induced gravitational waves with pulsar timing arraysRemoveZu-Cheng Chen, Jun Li, Lang Liu, and Zhu YiPhys. Rev. D 109, L101302 (2024)
Clockwork axion footprint on nanohertz stochastic gravitational wave backgroundRemoveBo-Qiang Lu, Cheng-Wei Chiang, and Tianjun LiPhys. Rev. D 109, L101304 (2024)
