4 papers
Stimulated Emission from Boson Clouds
Yu An, Xian-Hui Ge, Yun-Gui Gong +1
Gravitational-waves from astrophysical sources are characterized by their extreme faintness, which remains a primary obstacle for both current and next generation detectors. While…
Primordial Black Hole Formation and Spin in Matter Domination Revisited
Weitao Ye, Yungui Gong, Tomohiro Harada +4
In this article, we calculate the mass distribution of primordial black holes (PBHs) formed in the matter-dominated (MD) era by the peak theory. We apply the Zel'dovich approximati…
Limiting the Number of Extra Dimensions with Shortcuts
Zi-Chao Lin, Hao Yu, Yungui Gong
In higher-dimensional theories, a graviton propagating in the bulk can follow a shorter path, known as a shortcut, compared to a photon propagating in a four-dimensional spacetime.…
Generalized approach for the perturbative dynamical braneworld in dimensions
Zi-Chao Lin, Hao Yu, Yungui Gong
In this paper, we propose an approach to derive the brane cosmology in the -dimensional braneworld model. We generalize the "bulk-based" approach by treating the 4-brane as a sm…