3 papers
astro-ph.CO2020
Dirac-Born-Infeld realization of sound speed resonance mechanism for primordial black holes
Chao Chen, Xiao-Han Ma, Yi-Fu Cai
We present a concrete realization of the sound speed resonance (SSR) mechanism for primordial black hole (PBH) formation within a specific model of Dirac-Born-Infeld (DBI) inflatio…
astro-ph.CO2019
Primordial black holes from sound speed resonance in the inflaton-curvaton mixed scenario
Chao Chen, Yi-Fu Cai
We study sound speed resonance (SSR) mechanism for primordial black hole (PBH) formation in an early universe scenario with inflaton and curvaton being mixed. In this scenario, the…
astro-ph.CO2019
When Primordial Black Holes from Sound Speed Resonance Meet a Stochastic Background of Gravitational Waves
Yi-Fu Cai, Chao Chen, Xi Tong +2
As potential candidates of dark matter, primordial black holes (PBHs) are within the core scopes of various astronomical observations. In light of the explosive development of grav…