Geometric Dark Energy from Spin-Torsion Cosmology

We present a theoretical framework for dark energy arising from quantum gravitational effects in spin-torsion cosmology. Building on Loop Quantum Cosmology and Einstein-Cartan theory, we derive a parity-odd effective action through one-loop quantum corrections. The framework naturally generates a cosmological constant of order Λ ≈ (2.3 meV)⁴ through geometric dilution during inflation, addressing the cosmological constant problem without extreme fine-tuning.