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-rw-r--r--content/know/concept/lindhard-function/index.pdc2
1 files changed, 1 insertions, 1 deletions
diff --git a/content/know/concept/lindhard-function/index.pdc b/content/know/concept/lindhard-function/index.pdc
index aedf0f5..8af7416 100644
--- a/content/know/concept/lindhard-function/index.pdc
+++ b/content/know/concept/lindhard-function/index.pdc
@@ -35,7 +35,7 @@ Now consider a harmonic $\hat{H}_1$:
$$\begin{aligned}
\hat{H}_{1,S}(t)
- = e^{i (\omega + i \eta) t} \int_{-\infty}^\infty U(\vb{r}) \: \hat{n}(\vb{r}) \dd{\vb{r}}
+ = e^{i (\omega + i \eta) t} \int_{-\infty}^\infty U(\vb{r}) \: \hat{n}_S(\vb{r}) \dd{\vb{r}}
\end{aligned}$$
Where $S$ is the Schrödinger picture,