4 papers
Gravitational waves from graviton bremsstrahlung in scalar leptoquark decays
Qian-Jiu Wang, Hua Tong, Zhao-Huan Yu
We study the stochastic gravitational wave background originated from graviton bremsstrahlung in decays of scalar leptoquarks, which are colored scalar bosons simultaneously coupli…
Scalar-induced gravitational waves and primordial black holes from a localized bump or dip feature in a single-field inflationary potential
Xiang Zhang, Zhao-Huan Yu
We study the production of scalar-induced gravitational waves and primordial black holes in a single-field inflation model with a localized bump or dip feature in the potential. In…
Leptogenesis assisted by scalar decays
Jun-Yu Tong, Zhao-Huan Yu, Hong-Hao Zhang
We present a pragmatic approach to lower down the mass scale of right-handed neutrinos in leptogenesis by introducing a scalar decaying to right-handed neutrinos. The key point of…
Collapsing domain walls with -violating coupling to thermalized fermions and their impact on gravitational wave detections
Qing-Quan Zeng, Xi He, Zhao-Huan Yu +1
We study the dynamics of domain walls formed through the spontaneous breaking of an approximate symmetry in a scalar field, focusing on their collapse under the infl…