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gr-qc2025
Analytical solutions of bound timelike geodesic orbits in effective-one-body frame
Chen Zhang, Wen-Biao Han
We derive the approximate analytical solutions of the bound timelike geodesic orbits in the effective-one-body (EOB) frame with extreme-mass ratio limit. The analytical solutions a…
gr-qc2025
Inferring the cosmological constant in early Universe only by gravitational waves
Song Li, Wen-Biao Han
The expansion of the Universe is accelerating which can be interpreted as due to the cosmological constant . In this study, we investigate the behavior of gravitational waves in…