42 citations · 79 across the 7 of their papers we have counts for
7 papers
Reconstruction of Primordial Power Spectrum from Gravitational Waves of High-Redshift Black Hole Binaries
Qianhang Ding, Xinpeng Wang, Masahide Yamaguchi +1
High-redshift binary black hole (BBH) events are promising candidates for primordial black holes (PBHs) detectable by next-generation gravitational wave (GW) detectors. A redshifte…
When Tiny Halos Stir Spacetime: Gravitational Waves from Fifth-Force Mergers
Xinpeng Wang, Yifan Lu, Zachary S. C. Picker +2
Dark matter fermions interacting via attractive fifth forces mediated by a light mediator can form dark matter halos in the very early universe. We show that bound systems composed…
Composite Hybrid Inflation : Primordial Black Holes and Stochastic Gravitational Waves
Giacomo Cacciapaglia, Dhong Yeon Cheong, Aldo Deandrea +4
We investigate the production of primordial black holes and gravitational waves in composite hybrid inflation. Starting from an effective chiral Lagrangian with a dilaton and pions…
The Dual Primordial Black Hole Formation Scenario
Xinpeng Wang, Misao Sasaki, Ying-li Zhang
We report a novel mechanism where two families of primordial black holes (PBHs) may form at nearly the same comoving scales but at two different epochs. It is realized in two-stage…
Enhancement of primordial curvature perturbations in -corrected Starobinsky-Higgs inflation
Jinsu Kim, Xinpeng Wang, Ying-li Zhang +1
We provide a systematic study of the Starobinsky-Higgs inflation model in the presence of an additional cubic term of the Ricci scalar. We investigate, in particular, the effects o…
A complete analysis of inflation with piecewise quadratic potential
Xinpeng Wang, Xiao-Han Ma, Misao Sasaki
We conduct a thorough study of the comoving curvature perturbation in single-field inflation with two stages, represented by a piecewise quadratic potential, where bo…
Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break
Xinpeng Wang, Ying-li Zhang, Misao Sasaki
We investigate a model of -gravity with a non-minimally coupled scalar field that gives rise to two-stage inflation with a break, that is, with an intermediate stage where inf…