13 citations · 63 across the 14 of their papers we have counts for
15 papers · 1 filter
Cosmological perturbations and gravitational waves in the general Einstein-vector theory
Xiao-Bin Lai, Yu-Zhi Fan, Yu-Qi Dong +1
We investigate the stability and gravitational waves (GWs) in the four-dimensional general Einstein-vector theory on a cosmological background. To study the stability, we systemati…
Propagation and polarization of gravitational waves on curved spacetime backgrounds in Einstein-Æther theory
Yu-Qi Dong, Shinji Mukohyama, Yu-Xiao Liu
We analyze the propagation and polarization properties of high-frequency gravitational waves in Einstein-Æther theory on vorticity-free and slowly-varying backgrounds at both leadi…
Gravitational Wave Detection Based on Gravitomagnetic Effects
Yu-Qi Dong, Zhoujian Cao, Yu-Xiao Liu
In this paper, we explore the feasibility of detecting gravitomagnetic effects generated by gravitational waves, by monitoring the relative orientation of the angular momentum vect…
Stability Analysis of Cosmological Perturbations in the Bumblebee Model: Parameter Constraints and Gravitational Waves
Xiao-Bin Lai, Yu-Qi Dong, Yu-Zhi Fan +1
We constrain the parameter space of the Bumblebee model in a cosmological background and then investigate the properties of gravitational waves within the constrained parameter spa…
Polarization modes of gravitational waves in general symmetric teleparallel gravity
Yu-Qi Dong, Xiao-Bin Lai, Yu-Zhi Fan +1
In this paper, we investigate the polarization modes of gravitational waves within the most general symmetric teleparallel gravity theory that allows for second-order field equatio…
Gravitational wave cosmology
Ligong Bian, Rong-Gen Cai, Yu-Qi Dong +18
Gravitational waves (GWs) originating from cosmological sources offer direct insights into the physics of the primordial Universe, the fundamental nature of gravity, and the cosmic…
New gravitational wave polarization modes in the torsionless spacetime
Yu-Qi Dong, Xiao-Bin Lai, Yu-Zhi Fan +1
In this study, we investigate the polarization properties of gravitational waves within a torsionless spacetime framework, as described by the Palatini formalism. Our analysis unco…
Hereditary Effects and New Optical Properties of Nonlinear Gravitational Waves
Yu-Qiang Liu, Yu-Qi Dong, Yu-Xiao Liu
We investigate new optical effects of nonlinear gravitational waves that arise from hereditary effects. Firstly, we show that the amplitude of continuous plane waves has a heredita…
Polarization modes of gravitational waves in scalar-tensor-Rastall theory
Yu-Zhi Fan, Xiao-Bin Lai, Yu-Qi Dong +1
Rastall theory, originally introduced in 1972, suggests a violation of the usual conservation law. We consider two generalizations of Rastall theory: Brans-Dicke-Rastall theory and…
Gravitational-wave effects in the most general vector-tensor theory
Yu-Qi Dong, Xiao-Bin Lai, Yu-Qiang Liu +1
In this paper, we establish a model-independent framework based on the Isaacson picture to analyze the gravitational-wave effects in the most general vector-tensor theory that yiel…
Polarization modes of gravitational waves in general Einstein-vector theory
Xiao-Bin Lai, Yu-Qi Dong, Yu-Qiang Liu +1
We study the polarization modes of gravitational waves in general Einstein-vector theory with an arbitrary constant background vector field under a Minkowski background. We compare…
Polarization modes of gravitational waves in general modified gravity: General metric theory and general scalar-tensor theory
Yu-Qi Dong, Yu-Qiang Liu, Yu-Xiao Liu
In this paper, we establish a unified parameterized framework for analyzing the polarization modes of gravitational waves in the general metric theory (gravity is only described by…
Polarization modes of gravitational waves in generalized Proca theory
Yu-Qi Dong, Yu-Qiang Liu, Yu-Xiao Liu
In this paper, we study polarization modes of gravitational waves in generalized Proca theory in the homogeneous and isotropic Minkowski background. The results show that the polar…
Constraining Palatini-Horndeski theory with gravitational waves after GW170817
Yu-Qi Dong, Yu-Qiang Liu, Yu-Xiao Liu
In this paper, we investigate the possible parameter space of Palatini-Horndeski theory with gravitational waves in a spatially flat Universe. We find that if the theory satisfies…
Classification of Gravitational Waves in Higher-dimensional Space-time and Possibility of Observation
Yu-Qiang Liu, Yu-Qi Dong, Yu-Xiao Liu
The direct detection of gravitational waves opens the possibility to test general relativity and its alternatives in the strong field regime. Here we focus on the test of the exist…