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An eigenvalue or representation label used to classify quantum states under commuting observables and symmetries.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumEach relation below ends at this concept.
No direct relations are authored in this direction.
Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Baryon number is an additive internal quantum number, perturbatively conserved in the Standard Model but violated by electroweak anomalies in .
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-baryon_numberpdg-rpptong-particleThis is an authored directed relation from the source endpoint to the target endpoint.
Flavor distinguishes repeated quark and lepton species with otherwise analogous gauge roles.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-flavorpdg-rpptong-particleThis is an authored directed relation from the source endpoint to the target endpoint.
Lepton numbers label leptonic states; flavor lepton numbers are violated by neutrino mixing and total lepton number is not established as exact.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-lepton_numberpdg-2026-neutrinotong-particleThis is an authored directed relation from the source endpoint to the target endpoint.
The magnetic number labels a chosen-axis projection.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-magnetic_quantum_numberThis is an authored directed relation from the source endpoint to the target endpoint.
The orbital number is one angular-momentum quantum number.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-orbital_quantum_numberThis is an authored directed relation from the source endpoint to the target endpoint.
Parity is a discrete quantum number when spatial inversion commutes with the relevant Hamiltonian.
The target is a member or subtype of the broader source class.
wp-physics-parity_quantum_numbernlab-physics-parityThis is an authored directed relation from the source endpoint to the target endpoint.
The principal number is one atomic quantum number.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-principal_quantum_numberThis is an authored directed relation from the source endpoint to the target endpoint.
Electron spin projection is an atomic quantum number.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-spin_projection_quantum_numberThis is an authored directed relation from the source endpoint to the target endpoint.
Total labels a coupled angular-momentum representation.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-total_angular_momentum_quantum_number