Derivation of the Gravitational Lensing Deflection Angle in the Graviton Wave Model

This document provides a detailed, step-by-step derivation of the deflection angle for light passing near a massive object in the Graviton Wave Model (GWM). In contrast to General Relativity (GR), which attributes gravitational lensing to the curvature of spacetime, the GWM explains the bending of light through a refractive medium created by the wave potential of the graviton field. The final result aligns with GR’s prediction—such as the 1.75 arcseconds deflection observed during the 1919 solar eclipse—demonstrating the model’s consistency with observation. This derivation is designed to be thorough and self-contained, complementing the main GWM framework as presented in Henley (2024).