3 papers
hep-ph2026
Line-of-sight magnetic-field propagation effects on axion-like particle constraints from GRB 221009A
Chengcheng Han, Zhanhong Lei, Jiajie Yang +1
High-energy photons from GRB 221009A provide a powerful opportunity to probe axion-like particles (ALPs) through photon-ALP oscillations in cosmic magnetic fields. We revisit the A…
astro-ph.CO2025
Curvature Perturbations from Higgs Modulated Reheating
Weiyi Deng, Chengcheng Han, Zhanhong Lei +1
In this work we investigate curvature perturbations and non-Gaussianity arising from Higgs modulated reheating in the early Universe. We employ three different methods -- the perio…
hep-ph2025
Probing Non-Thermal Gravitinos Through Large-Scale Structure Observations
Weiyi Deng, Liyuan Guo, Chengcheng Han +1
We investigate the effects of non-thermally produced dark matter on large-scale structure formation, focusing on the gravitino dark matter. Our analysis shows that large-scale stru…