The Infiltration-Reaction Cyclic Universe (IRCU): A Conceptual Cosmological Hypothesis on Primordial Infiltration, Spatial Asymmetry, the Emergent Dark Sector, and Iterative Cosmic Evolution

The standard Lambda-CDM framework successfully accounts for a wide range of cosmological observations, from large-scale structure formation to primordial nucleosynthesis. Concurrently, foundational questions regarding the physical nature of the earliest universe, metric singularities, and the microscopic origins of the dark sector (95% of the cosmic energy budget) remain active areas of inquiry. This paper articulates The Infiltration-Reaction Cyclic Universe (IRCU), an exploratory, first-principles conceptual hypothesis grounded in strict causality (ex nihilo nihil fit: nothing emerges from nothing). We hypothesize that cosmic dynamics unfold within an invariant, eternal, and non-expanding three-dimensional Euclidean space. The primordial pre-state is conceptualized as comprising two fundamental components: an unexcited, spatial scalar substrate designated as Latent Matter (M_latent), and discrete fields of Primordial Energy (E_free) possessing an intrinsic self-attraction and structural ordering tendency. Over extended durations, dispersed energy pockets aggregated into a directional flux (E_unified). Rather than an isotropic expansion from a centralized point, the genesis interaction is framed as a non-centric infiltration of this energy into the unstructured latent matter. Owing to spatial non-uniformity and propagation thresholds, the interaction partitioned into an active baryonic sector (~5%), an unexcited non-radiative dark matter reserve (~27%), and unbonded diffuse dark energy (~68%). Cosmological redshift is approached as a compound effect of residual inertial drift and photon energy attenuation across static space. Black holes operate as structural containment anchors. Long-term localized decay leads to a proposed thermodynamic phase reset, returning the system to its primordial baseline for subsequent iterations.