Sonic Topologies of Silence: A Quantum Bioacoustic Framework for Information Encoding in Abyssal Piezophiles Expanded and Refined Edition

This study introduces a novel hypothesis that deep-sea piezophiles, thriving under extreme hadal pressures exceeding 1,100 atm, utilize quantum-coherent acoustic vibrations in pressurized protein-hydration lattices to encode, process, and transmit biological information—a mechanism dubbed Topological Bioacoustic Memory (TBM). Employing multi-scale computational methods, including density functional perturbation theory (DFPT), molecular dynamics (MD), quantum mechanics/molecular mechanics (QM/MM), non-equilibrium MD (NEMD), tight-binding models, and finite element analysis (FEA), the research demonstrates that outer membrane proteins in *Moritella yayanosii* form phononic topological insulators at 100 MPa. These insulators enable protected acoustic edge modes sustaining vibrational states beyond 100 ps, facilitating epigenetic-like encoding via frequency-phase modulation independent of DNA. A key innovation is the Xenobiological Acoustic Alphabet (XAA), a 16-symbol code based on phonon harmonics, achieving error-corrected storage densities over 10¹⁸ bits/cm³. The coherence paradox is addressed through pressure-induced suppression of thermal phonon density of states and piezoelectric lipid feedback for continuous error correction. QM/MM and NEMD simulations reveal molecular I/O: mechanosensitive channels "write" XAA symbols, while allosteric enzymes "read" them via vibronic coupling. Decompression-induced TBM erasure explains piezophile culturing difficulties. Rigorous validation ensures convergence, sensitivity, and reproducibility, positioning TBM as a quantum-enabled biological information layer with profound implications for astrobiology, quantum engineering, and synthetic biology.