16 citations · 20 across the 4 of their papers we have counts for
4 papers
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…
Flipped Rotating Axion Non-minimally Coupled to Gravity: Baryogenesis and Dark Matter
Chao Chen, Suruj Jyoti Das, Konstantinos Dimopoulos +1
We demonstrate that the co-genesis of baryon asymmetry and dark matter can be achieved through the rotation of an axion-like particle, driven by a flip in the vacuum manifold's dir…
Stochastic Axion-like Curvaton: Non-Gaussianity and Primordial Black Holes Without Large Power Spectrum
Chao Chen, Anish Ghoshal, Gianmassimo Tasinato +1
We discuss a mechanism of primordial black hole (PBH) formation that does not require specific features in the inflationary potential, revisiting previous literature. In this mecha…
Enhanced primordial gravitational waves from a stiff post-inflationary era due to an oscillating inflaton
Chao Chen, Konstantinos Dimopoulos, Cem Eröncel +1
We investigate two classes of inflationary models, which lead to a stiff period after inflation that boosts the signal of primordial gravitational waves (GWs). In both families of…