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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| documentation:standard_operators:charge_quadrupole:start [2017/02/23 17:29] – Maurits W. Haverkort | documentation:standard_operators:charge_quadrupole:start [2020/02/12 10:43] (current) – added missing "-" in formular Q_ij Fabian Wenzel | ||
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| Line 5: | Line 5: | ||
| The quadrupole operator is a special case of the crystal-field operator. The operator is defined as: | The quadrupole operator is a special case of the crystal-field operator. The operator is defined as: | ||
| \begin{equation} | \begin{equation} | ||
| - | Q_{ij} = 3r_ir_j/r^2 \hat{r}\cdot\hat{r}\delta_{i, | + | Q_{ij} = 3r_ir_j/ |
| \end{equation} | \end{equation} | ||
| Whereby we need to note that we here only take the angular part of a quadrupole. It's " | Whereby we need to note that we here only take the angular part of a quadrupole. It's " | ||
