Cosmological Horizons as Open Quantum System Phase Transitions: The Trifield Framework

Standard cosmological paradigms treat particle, event, and inflationary hori-zons as disconnected geometric artifacts of general relativity. In this paper, weintroduce the Trifield Framework, which unifies these macro-scale boundaries aslocalized, thermodynamic phase transitions within a singular cosmic field contin-uum. By modeling the universe as a macroscopic open quantum system governedby continuous-variable quantum information (CVQI) and a triadic informationallogic, we map its evolution across three distinct phases: the initialized GroundField Phase (|1⟩), the superposed Wave Field Phase (|ψ⟩), and the classical Exci-tation Field Phase (|0⟩). We propose a novel geometric superposition, modelingthe universe’s transition from the continuous string states of the Ground Phaseto the discrete spin-networks of Loop Quantum Gravity (LQC) in the ExcitationPhase. Furthermore, we derive the cosmological Lindblad jump operators governingthe reheating epoch, demonstrating mathematically that environmental decoher-ence—mediated by the stabilizing buffer of the macroscopic superposition—drivesthis dimensional reduction. Finally, we incorporate mechanisms from ConformalCyclic Cosmology (CCC) to demonstrate how absolute heat death conformally re-sets universal entropy. The framework yields falsifiable predictions, including a steep spectral index running in the cosmic microwave background (alpha-s approx -0.004) and a non-vanishing primordial tensor bispectrum (f-NL-tensor of order 1).