This preprint is the second part of a two-paper series on the Divine Wave Model (DWM) hybrid mass operator.In Part I ("DWM Hybrid Mass Operator and Inertial Modulation", Zenodo DOI: 10.5281/zenodo.17777054), the chi–psi–xi hybrid mass operator was introduced for mechanically disordered, coherence-capable materials such as granite. Environmental activation through coarse-grained density and shear invariants (X1 and X3) was shown to drive strong mixing between lattice-like (chi), spin-like (psi), and electromagnetic (xi) sectors, producing a soft inertial branch with dramatically reduced effective inertial mass, Meff. This effect allows large accelerations at modest driver power without altering gravitational mass.Part II extends that framework by adding a fourth sector, Gamma, representing a gravitational or curvature-response channel. The 4x4 chi–psi–xi–Gamma operator introduces an additional level of mixing, controlled by a dimensionless gravitational-decoupling coefficient beta. When the environmental activation crosses a higher threshold, the soft eigenmode acquires Gamma-sector participation and the effective gravitational mass Mgrav,eff becomes a tunable quantity distinct from both M0 and Meff.The model predicts three experimentally distinguishable regimes:- Regime I (beta = 0): pure inertial softening, Meff 1): gravitational decoupling, Mgrav,eff -> 0 while Meff remains finite.The paper develops:- the extended chi–psi–xi–Gamma operator and eigenmode structure,- dual-threshold activation conditions for inertial and gravitational softening,- a three-stage activation pathway (acoustic chipsi, radio-frequency psixi, low-frequency xiGamma),- an effective propulsion law in the Gamma-dominant regime where acceleration follows phase gradients rather than reaction mass,- and a set of testable laboratory and phenomenological predictions.Together with Part I, this work forms a complete theoretical basis for DWM-based inertial modulation and gravitational decoupling.

This work extends the Divine Wave Model (DWM) hybrid mass operator to include a controlled coupling to a gravitational interaction channel, denoted Gamma. In Part I, we showed that that environmental activation of the chi–psi–xi hybridization produces a soft inertial branch with an effective mass Meff 0). Regime II is shown numerically to enable sustained vertical ascent and dramatically reduced hover power. These results provide a natural theoretical basis for the “weightless but not massless” behavior seen in anomalous propulsion systems, and supply a consistent extension of the hybrid mass operator into the gravitational response sector.