A Non-Dual Ontological Reinterpretation of General Relativity and Quantum Theory, Part 3: The Low-Entropy Big Bang, the Cosmological Constant, and the Unified Radiation (Expression)/Reabsorption Dynamic.

This paper extends the non-dual One Source framework developed in Parts 1 and 2 to two of the longest-standing problems in cosmology: the extraordinarily low-entropy initial condition of the Big Bang and the tiny but positive value of the cosmological constant (dark energy). Within the One Source ontology, low-entropy boundary conditions are naturally projected from the primordial ground state, while the cosmological constant emerges as the net statistical balance between outward radiation and inward reabsorption in the vacuum. The framework preserves all standard cosmological equations and observations yet dissolves the fine-tuning puzzles without invoking multiverses, anthropic selection, or new dynamical laws. We review the current status of these problems as of 2026, present the ontological solution, and outline testable implications and future extensions.