This report presents a rigorous and exhaustive articulation of the Resonant 8-Dimensional Effective Field Theory (R8-EFT), a theoretical framework that fundamentally reinterprets the Standard Model of particle physics and the ΛCDM model of cosmology as emergent phenomena of a discrete, eight-dimensional vacuum geometry. The central thesis of R8-EFT is that the fundamental parameters of nature—such as particle masses and cosmological constants—are not arbitrary values but are deterministically fixed by the crystallographic properties of an E8 root lattice vacuum. By modeling the vacuum as a hyper-stiff elastic solid, the theory successfully post-dicts the mass of the Top Quark (172.44 GeV) and identifies the nature of Dark Matter as a topological lattice defect (phason), consistent with the recently observed X(2370) resonance. Note: The primary document is in English. The original German manuscript is included as supplementary material.