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gr-qc2026
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…
gr-qc2026
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…