104 citations · 258 across the 10 of their papers we have counts for
10 papers
Universal Suppression of Gravitational Waves from Black Hole Evaporation Dynamics
Xin-Chen He, Xiao-Han Ma, Misao Sasaki +1
Evaporating black holes can leave distinct imprints on gravitational wave (GW) backgrounds. We show that black hole populations with finite width mass distributions exhibit a unive…
Primordial Black Hole Formation from the Upward Step Model: Avoiding Overproduction
Xiaoding Wang, Xiao-Han Ma, Yi-Fu Cai
We investigate the formation of primordial black holes (PBHs) in an upward step inflationary model, where nonlinearities between curvature perturbations and field fluctuations intr…
Gravitational waves from primordial black hole isocurvature: the effect of non-Gaussianities
Xin-Chen He, Yi-Fu Cai, Xiao-Han Ma +3
Ultra-light primordial black holes (PBHs) with masses can dominate transiently the energy budget of the Universe and reheat the Universe throug…
A Compaction Function Analysis of CMB distortion Constraints on Primordial Black Holes
Junyue Yang, Xiaoding Wang, Xiao-Han Ma +4
Primordial black holes (PBHs) are considered viable candidates for dark matter and the seeds of supermassive black holes (SMBHs), with their fruitful physical influences providing…
Ultra-light dark matter with non-canonical kinetics reopening the mass window
Shiyun Lu, Amara Ilyas, Xiao-Han Ma +3
Fuzzy dark matter (FDM) with mass around eV is viewed as a promising paradigm in understanding the structure formation of the local universe at small scales. Recent obse…
New probe of non-Gaussianities with primordial black hole induced gravitational waves
Theodoros Papanikolaou, Xin-Chen He, Xiao-Han Ma +3
We propose a new probe of primordial non-Gaussianities (NGs) through the observation of gravitational waves (GWs) induced by ultra-light () primordial…
Limits on scalar-induced gravitational waves from the stochastic background by pulsar timing array observations
Yi-Fu Cai, Xin-Chen He, Xiao-Han Ma +2
Recently, the NANOGrav, PPTA, EPTA, and CPTA collaborations independently reported their evidence of the Stochastic Gravitational Waves Background (SGWB). While the inferred gravit…
Primordial black hole mass functions as a probe of cosmic origin
Yi-Fu Cai, Chengfeng Tang, Geyu Mo +7
We discuss a novel window to probe the origin of our universe via the mass functions of primordial black holes (PBHs). The mass functions of PBHs are simply estimated using the con…
Highly non-Gaussian tails and primordial black holes from single-field inflation
Yi-Fu Cai, Xiao-Han Ma, Misao Sasaki +2
For primordial perturbations, deviations from Gaussian statistics on the tail of the probability distribution can be associated with non-perturbative effects of inflation. In this…
One Small Step for an Inflaton, One Giant Leap for Inflation: a novel non-Gaussian tail and primordial black holes
Yi-Fu Cai, Xiao-Han Ma, Misao Sasaki +2
We report a novel prediction from single-field inflation that even a tiny step in the inflaton potential can change our perception of primordial non-Gaussianities of the curvature…