- Chinese Academy of SciencesCN1.2k papers
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487 papers · 1 filter
Testing General Relativity with Binary Lens Microlensing Events
Xinyang Jin, Shuo Cao, Xuanni Chen +3
Einstein's General Relativity (GR), which has been precisely tested on galaxy and solar system scales, is still poorly constrained in extremely weak gravitational fields (with dime…
Null test of general relativity based on gravitational waves
Dawen Chen, Zeyuan Kang, Zhoujian Cao
Several hundreds of gravitational wave events have been detected. They are good tools to investigate various fundamental problems, including tests of general relativity (GR) theory…
Gravitational caloric theory: From early dark energy to a wide variety of gravitational phenomena
S. X. Tian
We propose gravitational caloric theory (GCT) --- an extension of general relativity that features a vector field sourced by and non-minimally coupled to the fluid sector whi…
Degenerate Limits of Scalar-Tensor Gravity
Bekir Baytaş, Xiao-Kan Guo
We study the degenerate limits of the scalar-tensor theory of gravity in its Hamiltonian connection dynamics formulation. The degenerate limit of the spatial triad is effectuated b…
Solving Hamiltonian Constraint Equation with Physics-Informed Neural Networks
Yu-Chen Zhou, Hao Ma, Zhoujian Cao +6
Numerical relativity (NR), solving Einstein equation numerically, plays an important role in source modelling for gravitational wave astronomy. Traditional methods for NR including…
Tidal Love numbers and the dynamical instability of AdS bubbles
Gerui Chen, Yu Tian, Hongbao Zhang
In this work, we study non-radial perturbations of AdS bubbles and their tidal Love numbers (TLNs). The odd- and even-parity TLNs are computed up to in the limit $k \to \inft…