Continuous Wave Incommensurability over Primes: Dynamical Level Repulsion, Finite-Time Resonance Avoidance, and the Physical Origin of Spectral Rigidity

For over fifty years following the Montgomery–Dyson encounter, the correspondence between the non-trivial zeros of the Riemann zeta function and quantum spectral statistics has motivated attempts to identify a deeper connection between arithmetic structure and quantum spectra. This paper proposes that the physical origin of this correspondence should be sought not in prime numbers alone, but in the more general principle of continuous wave (in)commensurability and resonance avoidance. In the proposed framework, two oscillatory transition modes are characterized by their minimum nodal separation (δ_min) relative to a resonance tolerance (δ_tol). Commensurate frequency relations permit recurrent maximal nodal alignment and favor resonance locking, whereas increasing incommensurability progressively suppresses attainable resonance. When δ_min > δ_tol, accumulated resonance cannot reach the transition threshold, preventing mode coalescence and favoring spectral level repulsion. Thus, spectral rigidity is interpreted as a dynamical consequence of resonance avoidance among interacting wave modes rather than as an exclusively statistical property. Atomic electronic transitions and nuclear resonance spectra are examined as complementary physical realizations of this principle. The framework further interprets prime numbers as a discrete integer-lattice subset of a broader continuous structure of non-divisibility. On this basis, the Montgomery–Dyson correspondence is proposed to reflect a common underlying architecture: arithmetic non-divisibility on the discrete integer lattice and resonance avoidance arising from continuous wave incommensurability in quantum spectra. This interpretation provides a concrete, physically testable direction for investigating the origin of their matching correlation structures.