Primordial Lithium-7 Abundance in a Non-Equilibrium Energy Circulation Framework

This work presents version 1.2 of a compact theoretical study based on the TECC (Thermodynamic Energy Circulation Cosmology) framework, focusing on the cosmological lithium-7 abundance problem.Within TECC, primordial light-element abundances are interpreted as the outcome of energy-density circulation and redistribution among baryonic matter, dark matter, and dark energy phases, rather than being fixed solely by standard nuclear reaction rates.Using a unified circulation mechanism, we derive a quantitative fit to the observed primordial lithium-7 abundance, naturally reducing the discrepancy between standard Big Bang nucleosynthesis predictions and astronomical measurements.Beyond reproducing current observations, this work provides testable predictions, including:a constrained lithium abundance range under early-universe energy redistribution,correlated deviations in light-element abundances under non-equilibrium circulation,and potential observational signatures distinguishable from ΛCDM-based extensions.This version is intended as an anchoring and predictive release, serving both as a reference implementation of the mechanism and as a basis for future observational and experimental verification.No additional free parameters are introduced beyond the internal TECC circulation structure.