18 citations · 37 across the 8 of their papers we have counts for
8 papers
A Common 55 GeV Inelastic Dark Matter Origin of the LZ, Fermi-LAT, and AMS-02 Excesses and Paleo-Detector Prospects
Meiwen Yang, Quan-feng Wu, Yue-Lin Sming Tsai +3
We investigate the 248~keV nuclear recoil excess reported by LUX-ZEPLIN (LZ) in a leptophobic inelastic dark matter framework, in which the mass splitting naturally suppresses low-…
A Unified Bogoliubov Approach to Primordial Gravitational Waves: From Inflation to Reheating
Yubing Wang, Quan-feng Wu, Xun-Jie Xu
We present an effective numerical method that can be used to straightforwardly calculate the full spectrum of primordial gravitational waves produced during inflation and reheating…
Probing Bose-enhanced Inflaton Decay with Gravitational Waves
Nicolás Bernal, Quan-feng Wu, Xun-Jie Xu +1
We investigate cosmic reheating dynamics in the presence of a transient condensate formed by bosonic decay products of the inflaton. We show that the emergence of such a condensate…
Primordial Black Holes Evaporating before Big Bang Nucleosynthesis
Quan-feng Wu, Xun-Jie Xu
Primordial black holes (PBHs) formed from the collapse of density fluctuations provide a unique window into the physics of the early Universe. Their evaporation through Hawking rad…
No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
P. S. Bhupal Dev, Quan-feng Wu, Xun-Jie Xu
Heavy neutral leptons (HNLs) are well-motivated new physics candidates. The mixing of sub-GeV HNLs with active neutrinos is severely constrained by cosmology. In particular, the su…
Pre-thermalized Gravitational Waves
Nicolás Bernal, Quan-feng Wu, Xun-Jie Xu +1
We investigate a novel gravitational wave (GW) production mechanism from gravitons generated during the pre-thermal phase of cosmic reheating, where the energy density is dominated…
High-Energy and Ultra-High-Energy Neutrinos from Primordial Black Holes
Quan-feng Wu, Xun-Jie Xu
Primordial Black Holes (PBHs) are capable of emitting extremely energetic particles independent of their interactions with the Standard Model. In this work, we investigate whether…
A comprehensive calculation of the Primakoff process and the solar axion flux
Quan-feng Wu, Xun-Jie Xu
The Primakoff process plays a crucial role in axion production in astrophysical environments and laboratories. Given the rising interest in axion physics and many on-going experime…