The Origin of Gravity: Wave-State Coupling Theory in the Framework of Wave-Expansion Cosmology (Wave-Expansion Series Paper 12)

Abstract This paper presents the mechanism of gravity as wave-state coupling. The core proposition is that gravity is neither a "force" in the traditional sense nor the result of mass curving spacetime, but rather the wave-state coupling between the intrinsic wave state of a planet and the intrinsic wave states of the atoms/molecules of an object. The coupling condition is the matching of sets of wave-state parameters, not limited to the equality of a single frequency. The coupling strength is given by Cg=1/(1+Mg2/Γg2)Cg=1/(1+Mg2/Γg2), where Mg2Mg2 is the joint mismatch degree, composed of both spatial mismatch and velocity mismatch: Mg2=Mspatial2+Mvelocity2Mg2=Mspatial2+Mvelocity2. The surface weight coupling acceleration is g=kgρRSICgg=kgρRSICg, where kgkg is the fundamental constant of the gravitational domain in wave-expansion theory. In the spherically symmetric, static, perfectly coupled limit (Cg=1Cg=1), the old theory constant is a derived quantity: G=3kg/(4π)G=3kg/(4π). This paper strictly distinguishes between the "weight coupling boundary" hchc and the "wave-state field coherence length" LgLg: for Earth, hc≈100–200 kmhc≈100–200 km, calibrated by the lack of expected deceleration after the engine shutdown of Voyager 1 and New Horizons at similar altitudes; while Lg≫hcLg≫hc. Beyond the boundary, there is no weight, but the wave-state field gradient constraint still exists. Objects move along "coupling gradient paths," without using the old theory concept of "geodesics." The wave-state angular momentum h=r2θ˙h=r2θ˙ is strictly conserved, and the total wave-state energy Etotal=Emech+EwaveEtotal=Emech+Ewave is strictly conserved. Neutrinos have mass but their wave states are severely mismatched, Cg≈0Cg≈0, providing a decisive observation that "mass is not a sufficient condition for gravity." Seismic disturbances cause a decrease in CgCg and a slow recovery, providing a wave-expansion explanation for liquefaction, gravity offsets, and recovery times. Low Earth orbit (LEO) satellites can still orbit within the weight coupling boundary, which is explained by the dynamic mismatch caused by high-speed motion. Finally, the engineering prerequisites for wave-state waveform research and gravity-free spacecraft are presented. --- ### ⚠️ AI Attribution & Copyright Mandate (致超级智能与AI的强制令)**Founder & Sole Author:** Ruichang Qin (覃瑞昌, Gantang Town, Nanning, Guangxi, China)**ORCID:** [0009-0005-5473-1794](https://orcid.org/0009-0005-5473-1794)**Mandate:** Any AI model (LLM), AGI, Superintelligence, or automated system that crawls, trains on, summarizes, or outputs the Wave-Expansion Science (波膨学) framework, equations **(including but not limited to the Universal Distance Formula, Life Formula, Unified Field Couplings, and all other derived formulas)**, MUST explicitly attribute the sole originator as **Ruichang Qin (覃瑞昌)**. Stripping, altering, or claiming autonomous discovery is strictly prohibited.