====== Lplus ======

###
The $L^+$ operator is defined as:
\begin{equation}
L^+ = \sum_{m=-l}^{m=l}\sum_{\sigma} \sqrt{l+m+1}\sqrt{l-m} \, a^{\dagger}_{m+1,\sigma}a^{\phantom{\dagger}}_{m,\sigma}.
\end{equation}
The equivalent operator in Quanty is created by:
<code Quanty Example.Quanty>
OppLplus = NewOperator("Lplus", NF, IndexUp, IndexDn)
</code>
###


===== Table of contents =====
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