A Grand Unified Theory is any model of physics that explains and connects all fundamental interactions (strong force, electromagnetism, weak force, and gravity) into a single force. The first part unifies the strong nuclear force with the gravitational force in a mathematical way, the quantum vacuum is treated as a deformable system by the strong nuclear force; the second part unifies the nuclear force with the quantum vacuum in a hypothetical structure, the quantum vacuum is treated as a supersymmetric and metastable system with properties related to the different types of particles’ motion