3 papers
astro-ph.CO2025
Inflation in light of ACT/SPT: A new perspective from Weyl gravity
Qing-Yang Wang
Recent measurements from the Atacama Cosmology Telescope (ACT) and the South Pole Telescope (SPT) have placed the strictest constraints on the primordial scalar perturbation spectr…
astro-ph.CO2025
Purely gravitational dark matter production in warm inflation
Qing-Yang Wang, Tianyu Jia, Pei-Ran Chen +1
We consider an appealing scenario for the production of purely gravitational dark matter in the background of warm inflation, a mechanism that maintains stable thermal bath during…
astro-ph.CO2023
Gravitational Waves from Preheating in Inflation with Weyl Symmetry
Wei-Yu Hu, Qing-Yang Wang, Yan-Qing Ma +1
Inflation with Weyl scaling symmetry provides a viable scenario that can generate both the nearly scaling invariant primordial density fluctuation and a dark matter candidate. Here…