41 citations · 152 across the 22 of their papers we have counts for
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Acoustic gravitational waves from primordial curvature perturbations
Zhuan Ning, Zi-Yan Yuwen, Xiang-Xi Zeng +2
Standard perturbative calculations of scalar-induced gravitational waves (SIGWs) have neglected nonperturbative effects in the large-amplitude regime. We develop a hybrid numerical…
Primordial Black Holes from Primordial Voids
Cristian Joana, Zi-Yan Yuwen
Primordial black holes (PBHs) are a compelling dark matter candidate and a unique probe of small-scale cosmological fluctuations. Their formation is usually attributed to large pos…
Cosmological Prediction from the joint observation of MeerKAT and CSST at = 0.4 1.2
Yu-Er Jiang, Yan Gong, Qi Xiong +10
Cross-correlating neutral hydrogen (HI) 21cm intensity mapping with galaxy surveys provides an effective probe of astrophysical and cosmological information. This work presents a c…
Sound waves from primordial black hole formations
Zhuan Ning, Xiang-Xi Zeng, Zi-Yan Yuwen +3
We present a numerical investigation of primordial black hole (PBH) formation from super-horizon curvature perturbations and the subsequent generation and propagation of sound wave…
Relic gravitational waves from primordial gravitational collapses
Xiang-Xi Zeng, Zhuan Ning, Zi-Yan Yuwen +3
A large primordial density perturbation of the Hubble scale will gravitationally collapse, generating an outgoing sound shell, whether or not a primordial black hole (PBH) is forme…
Gravitational waves from vacuum bubbles: Ultraviolet dependence on wall thickness
Jun-Chen Wang, Shao-Jiang Wang, Zi-Yan Yuwen
The gravitational wave (GW) spectrum from the first-order phase transition can be characterized by a few phenomenological parameters but with high degeneracies in model/data distin…