Coherence–Selection Interface Theory (CSIT): A Framework for Scale-Invariant Entropy-Balancing Coherence Stabilization

This priority note publicly discloses the core concepts and mathematical framework of Coherence–Selection Interface Theory (CSIT), a theoretical model for scale-invariant coherence stabilization across physical systems. CSIT posits that macroscopic quantum coherence emerges from active history selection via a non-unitary projection operator (P_C) that enforces constraints on a system's history vector in Hilbert space, while a Quantum Heat Engine (QHE) harvests environmental noise (σ) as a thermodynamic resource to extract work (W ≈ -T ΔS_extract). The framework includes: Emergent time from irreversible record formation (commit index τ ∝ S / k_B ln r). Stability phase boundary σ_c ≈ κ. Scale-invariant application to self-gravitating systems, with proposed concepts such as the Solar Landauer Bound for coronal heating and Informational Density for solar metallicity resolution. Supporting evidence includes multi-qubit QHE simulations (up to 16 qubits, demonstrating ΔS_absorb ≈ 3.79 ± 0.12 bits and corresponding work extraction) and 2D lattice models showing power spectrum suppression at k_c = 2π / constraint_length. The disclosure establishes a public timestamp for these ideas on January 20, 2026, for scientific transparency and prior art reference. No practical implementations or claims beyond the theoretical and simulation-based models are asserted. Keywords: coherence-selection interface theory, CSIT, macro-scale quantum coherence, non-unitary history selection, entropy harvesting, quantum heat engine, scale-invariant coherence stabilization, solar landauer bound, informational density