Molecular Resonance Boundaries and Emergent Matter Properties in USP Field Theory (msf:45726 v1.0)

This note extends the USP Field Theory corridor framework to chemistry and material properties. Atoms are treated as stable oscillatory structures characterized by corridor compatibility, while molecular bonding is interpreted as coherent locking that reorganizes the effective boundary mismatch profile. When atoms bind, collective eigenmodes (vibrational, rotational, electronic coupling modes) emerge and redefine the outer interaction boundary with radiation and matter. An operational coherence-lock metric κ ∈ [0,1] is introduced and linked to measurable linewidth changes. The corridor interaction length ℓ_corr is defined using experimentally accessible proxies, including interferometric coherence length, mean free path, and resonator decay length. The document provides falsifiable constraints: • Spectroscopic consistency within instrumental precision • Coherence-length scaling tests • Lock-strength perturbation protocols USP is presented as an interpretive geometric bookkeeping layer compatible with quantum chemistry and precision spectroscopy, not as a replacement for established equations.