Dynamic Accumulation of Domain-Interaction Curvature and Gravitational Lensing

This paper develops a phenomenological lensing framework within the Multiple Big Bang – Domain Interaction (MBB-DI) cosmology. Instead of treating dark matter as a particulate component, the framework interprets excess gravitational lensing as an emergent consequence of Domain Interaction (DI)-induced effective curvature. A primary junction-focusing mechanism is proposed as the seed source of additional curvature, while halo-like amplification and large-scale curvature enhancement arise dynamically through accumulated DI propagation. The model predicts that effective dark-matter-like lensing is not static but evolves with cosmic history through a time-dependent accumulation function Γ(t). The framework naturally predicts increasing dark-matter-to-baryon ratio with cosmic evolution, evolving lensing strength, history-dependent halos, and possible links between dark matter and dark energy. A publication-oriented toy model is developed and shown to reproduce the observed dark-sector lensing fraction without introducing particulate dark matter.