2 papers
astro-ph.CO2025
Can asteroid-mass PBHDM be compatible with catalyzed phase transition interpretation of PTA?
Jiahang Zhong, Chao Chen, Yi-Fu Cai
Primordial black holes (PBHs) can catalyze first-order phase transitions (FOPTs) in their vicinity, potentially modifying the gravitational wave (GW) signals from PTs. In this stud…
gr-qc2024
Sound Speed Resonance of Gravitational Waves in Gauss-Bonnet-coupled inflation
Andrea Addazi, Yermek Aldabergenov, Yifu Cai
We demonstrate the occurrence of Sound Speed Resonances (SSR) in Gauss-Bonnet-coupled inflation across a wide range of coupling functions and parameters. After inflation, the dampe…