81 citations · 1.4k across the 54 of their papers we have counts for
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Unraveling the early universe's equation of state and primordial black hole production with PTA, BBN, and CMB observations
Qing-Hua Zhu, Zhi-Chao Zhao, Sai Wang +1
Pulsar timing array (PTA) data releases showed strong evidence for a stochastic gravitational-wave background in the nanohertz band. When the signal is interpreted by a scenario of…
Constraints On Scalar-Induced Gravitational Waves Up To Third Order From Joint Analysis of BBN, CMB, And PTA Data
Sai Wang, Zhi-Chao Zhao, Qing-Hua Zhu
Recently, strong evidence for a gravitational wave background has been reported by collaborations of pulsar timing arrays (PTA). In the framework of scalar-induced gravitational wa…
Implications of Pulsar Timing Array Data for Scalar-Induced Gravitational Waves and Primordial Black Holes: Primordial Non-Gaussianity Considered
Sai Wang, Zhi-Chao Zhao, Jun-Peng Li +1
Multiple pulsar-timing-array collaborations have reported strong evidence for the existence of a gravitational-wave background. We study physical implications of this signal for co…
Primordial Non-Gaussianity and Anisotropies in Scalar-Induced Gravitational Waves
Jun-Peng Li, Sai Wang, Zhi-Chao Zhao +1
Primordial non-Gaussianity encodes vital information of the physics of the early universe, particularly during the inflationary epoch. To explore the local-type primordial non-Gaus…
Primordial Gravitational Waves Assisted by Cosmological Scalar Perturbations
Yan-Heng Yu, Sai Wang
Primordial gravitational waves are a crucial prediction of inflation theory, and their detection through their imprints on the cosmic microwave background is actively being pursued…