This work examines the structural admissibility of GeV-scale energies in non-isolated gravitational systems embedded in cosmology. By combining global energy non-closure, relativistic causality, and cosmological expansion, we show that observable energy scales in the GeV range are not structurally excluded when interpreted as partitions of a collective global energy scale. The analysis establishes compatibility rather than origin, mechanism, or prediction.
Matheus Wilker Magalhães de Almeida Almeida (Thu,) studied this question.