Abstract Based on the established monistic primordial field axioms, 1.944 mm macroscopic discrete lattice structure, and conjugate golden decay law of the Real-Virtual Dual-Field Theory (RVDT), this paper defines gravitational waves as elastic shear-compression coupled perturbations of the virtual field macroscopic lattice medium, without introducing any new underlying axioms or free fitting parameters, and achieves the unification of gravitational interaction and wave propagation in terms of medium dynamics. Starting from the RVDT global dissipative field potential equation and combined with the unified lattice density-elasticity scaling law, this paper derives the standard gravitational wave equation with primordial field resistance damping. It is proved that the speed of gravitational waves is strictly equal to the speed of light in a weak-field uniform environment, which perfectly matches the arrival time difference constraint between gravitational waves and electromagnetic waves in the GW170817 event. The attenuation in the low-frequency band is far below the current observation accuracy, which naturally explains the observed fact of no extra loss during long-distance propagation. Relying on the verified "real-field density-dependent virtual field coupling mechanism" of RVDT, this paper quantitatively explains the Hubble constant divergence of gravitational wave standard sirens: high-redshift distant sources are located in the dense real-field suppression region, where the virtual field gradient contribution approaches zero, and the distance measurement corresponds to the baseline Hubble constant ; nearby low-redshift sources are located in the virtual field gradient release region, where the additional equivalent expansion term leads to systematically overestimated distance measurement, corresponding to the local measured value . The difference is fully consistent with the 5.77 increment obtained from electromagnetic observations in RVDT-03, providing a unified medium dynamic explanation for the Hubble tension across observation methods. Combined with the zeroing effect and real-virtual field coupling rules, this paper resolves the three core paradoxes of traditional vacuum fluid gravitational wave theories at one stroke: the uniform substrate cannot be directly detected, there is no dispersion in long-distance propagation, and there is no extra energy loss. The paper presents 4 quantitative falsifiable predictions, which can be independently tested by third-generation ground-based gravitational wave detectors and space gravitational wave interferometers, forming a multi-dimensional cross-validation chain with existing astronomical and experimental predictions of the RVDT system. Keywords: Real-Virtual Dual-Field Theory; macroscopic lattice medium; gravitational waves; standard siren; Hubble tension; conjugate golden decay law; primordial field resistance; zeroing effect
Zhongqiang Liu (Wed,) studied this question.