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The 40 pages that link to Quantum harmonic oscillator, each with the reason it gives.

• Schrödinger equationBroader topic: Its solvable spectrum illustrates the equation’s use for bound motion.

• EigenvalueBroader topic: Its allowed energy levels are eigenvalues of the Hamiltonian operator.

• Energy levelBroader topic: Its equally spaced levels model vibrations in molecules and solids.

• Ground stateBroader topic: Its lowest level illustrates a ground state with unavoidable zero-point energy.

• Zero-point energyBroader topic: Its lowest energy is exactly half a quantum of oscillator energy, the standard example of zero-point energy.

• Heisenberg uncertainty principleBroader topic: Its ground state illustrates the minimum allowed position–momentum uncertainty.

• EigenvectorBroader topic: Its allowed energy states are eigenstates of the Hamiltonian operator.

• Hamiltonian (quantum mechanics)Broader topic: Its Hamiltonian yields an exactly solvable model central to quantum theory.

• Matrix mechanicsBroader topic: Its matrix treatment yields discrete energy levels and illustrates the method’s calculations.

• Quantum fluctuationBroader topic: Its ground state has nonzero position and momentum uncertainty.

• Creation and annihilation operatorsBroader topic: Its ladder operators provide the prototype for creating and annihilating field quanta.

• Hamiltonian operatorBroader topic: Its Hamiltonian yields a solvable spectrum used throughout quantum theory.

• Wave mechanicsBroader topic: Its exact wavefunctions and evenly spaced energy levels make it a foundational model.

• Ehrenfest theoremBroader topic: Its linear force makes Ehrenfest's average equations coincide exactly with classical oscillator equations.

• QuantizationBroader topic: Its discrete spectrum is a standard, exactly solvable example of quantization.

• Einstein solidBroader topic: Each atom’s vibration is represented by this system.

• 0-dimensional systemsBroader topic: It is a standard exactly solvable example with one dynamical coordinate and no spatial field.

• Bra–ket notationBroader topic: Its energy eigenstates make ladder-operator calculations especially compact.

• Mathematical formulation of quantum mechanicsBroader topic: Its exactly solvable states illustrate operators, spectra, and Hilbert-space bases.

• QuantumBroader topic: Its evenly spaced energy spectrum is a canonical model of quantized energy.

• Quantum vacuum stateBroader topic: Each independent field mode behaves like an oscillator with a fluctuating ground state.