Gravitational waves in models with multicritical-point principleYuta Hamada, Hikaru Kawai, Kiyoharu Kawana, Kin-ya Oda and Kei YagyuEur. Phys. J. C, 82 5 (2022) 481DOI: https://doi.org/10.1140/epjc/s10052-022-10440-8