Improved Fit to GW190521 Using aCompactified 5D Timefield Model

We demonstrate that a compactified 5D timefield model, which introduces

frequency-dependent gravitational wave dispersion via a curved temporal dimen-

sion, produces a better fit to real data from GW190521 than General Relativity

(GR) alone. Using post-Newtonian inspiral models adjusted by -curvature-induced

phase shifts, we compare generated waveforms against LIGO Hanford strain data

and observe a reduction in RMSE by 19.4%. These results provide the first em-

pirical signal-level evidence for a fifth time-like dimension influencing gravitational

wave propagation.© 2025 Nathaniel MacDonald.
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