Singularity-Free Planck-Scale Dual-Unified Energy Model for Primordial Inflation and Dark Matter–Baryon Co-Genesis

A singularity-free dual-unified energy scenario is proposed for the primordial Universe within a Planck-scale framework. In this picture, the early Universe consists of a central primordial dark sector, with a visible energy sector effectively bound in orbit around it within a characteristic Planck-length-scale region. Quantum-gravitational interactions continuously reduce the orbital separation between these sectors and drive them toward a unified configuration at the Planck scale. The unified phase induces an effective negative-pressure equation of state, with the central primordial dark sector behaving as a transient vacuum-like component, which triggers an inflaton-free phase of primordial cosmic inflation. After inflation, reheating of the unified configuration leads to a correlated decay of the two sectors: the primordial dark sector yields non-thermal cold dark matter, while the visible sector produces standard-model particles. In this way the model avoids the Big Bang singularity and, at the same time, naturally accounts for the observed dark-matter–to–baryon density ratio of order five through a unified co-genesis mechanism.