4 papers
Detectability of Primordial Black Hole Binaries at High Redshift
Qianhang Ding
We show that the gravitational wave signals from primordial black hole (PBH) binaries at high redshift can be detected. The detectability of PBH binaries is enhanced by redshift bi…
Gravitational Collider Physics via Pulsar-Black Hole Binaries
Qianhang Ding, Xi Tong, Yi Wang
We propose to use pulsar-black hole binaries as a probe of gravitational collider physics. Induced by the gravitation of the pulsar, the atomic transitions of the boson cloud aroun…
Detectability of Gravitational Waves from the Coalescence of Massive Primordial Black Holes with Initial Clustering
Qianhang Ding, Tomohiro Nakama, Joseph Silk +1
We show that the effect of initial non-Gaussian clustering can significantly enhance the event rate for primordial black hole (PBH) coalescence. The impact of such clustering is st…
Imprints of Schwinger Effect on Primordial Spectra
Wan Zhen Chua, Qianhang Ding, Yi Wang +1
We study the Schwinger effect during inflation and its imprints on the primordial power spectrum and bispectrum. The produced charged particles by Schwinger effect during inflation…