Quantum Eigen Energy (Anharmonic)

Available identifiers

eigenenergies of anharmonic oscillator systems

Eigenenergies of anharmonic oscillator systems, e.g. molecular vibrations, beyond the harmonic approximation.

Defining Formula: $E_{n} = \sum_{r = 1}^{3 N - 6} ω_{r} (n_{r} + \frac{1}{2}) + \sum_{r > s} χ_{r s} (n_{r} + \frac{1}{2}) (n_{s} + \frac{1}{2})$
$E$ symbol represents Quantum Eigen Energy
$N$ symbol represents Number of Particles
$χ$ symbol represents Anharmonicity Constant
$ω$ symbol represents Vibration Frequency (Harmonic)
$n$ symbol represents Quantum Number

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