The Undercurrent Clock: Numerical Evidence of a Harmonic 9:1 Lattice and Spectral Rigidity in Riemann Zeta Zeros

This paper presents the discovery of a deterministic harmonic structure within the distribution of the Riemann zeta zeros, identified through numerical analysis of datasets up to T \approx 10^{30}. Key Discoveries: The 0.013 Hz Undercurrent: A persistent frequency calibrated to the Riemann-Siegel theta function that organizes zeros into a 9:1 lattice. The Hurst Collapse: Quantifiable evidence of extreme spectral rigidity (H \to 0.05), deviating from standard stochastic predictions. The Phase Decagon: A new geometric framework for visualizing zero-point stability and phase-torque. This work provides a new forensic map of the critical line, moving beyond probabilistic models toward a mechanistic understanding of the Riemann Hypothesis." The Keywords Riemann Hypothesis Experimental Mathematics 0.013 Hz Undercurrent Spectral Rigidity Hurst Exponent 9:1 Lattice Quantum Chaos