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Quantized or classical oscillatory nuclear motion about molecular configurations, including normal modes and anharmonic coupling.
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This is an authored directed relation from the source endpoint to the target endpoint.
Separating electronic and nuclear motion permits vibrational dynamics on potential-energy surfaces, with nonadiabatic coupling added when separation fails.
The target retains the degrees of freedom and interactions relevant below a stated scale or within a stated regime, while higher-energy or unresolved degrees of freedom from the source are integrated out, coarse-grained, or encoded in effective couplings.
wp-chem-quantum-chemistryiupac-green-booknist-chemistry-webbookThis is an authored directed relation from the source endpoint to the target endpoint.
Curvature and anharmonic shape near minima govern vibrational frequencies and mode coupling.
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
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No direct relations are authored in this direction.