11 papers
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-Ãther theory
Yu-Qi Dong, Shinji Mukohyama, Yu-Xiao Liu
We analyze the propagation and polarization properties of high-frequency gravitational waves in Einstein-Ãther theory on vorticity-free and slowly-varying backgrounds at both lead…
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…
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…
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…